Category Archives: ShadowFinder
Ideas For “Hidden World” Modern Fantasy Settings
I have a long track record of loving what I think of “Hidden World” modern fantasy settings. A lot of it comes from my reading of pulp novels as a child, but certainly a number of more recent authors and stories have fed into it as well. Whether it’s magic nannies coming to save children from the troubles of everyday life, caretakers with magic devices in their homes who take in children during the Blitz (and possibly animate armor soldier to fight Nazis), wizard acting like detectives in the modern world, fantasy detectives doing the hard boiled act in feudal settings, magic worlds beneath the streets of London (or New York, or heck Dallas), immortal swordsmen, secret clans of assassins, bounty hunters (literally) from hell, busters-of-ghosts, psychic subcultures, revenant goths, or WWII witches and werewolves, I’m there for it.
Or, you know, ShadowFinder.
Sometimes I have ideas I think would work well within Hidden World settings, often while taking in Hidden World stories and thinking of directions the worldbuilding could go, but doesn’t.
Here are some.
Ancient Wards
Numerous magical defenses have been invented over the millennia, but the most common were developed in the 1200s, 1300s, and 1400s. These wards are far more effective against types of weapons that were invented after they wards were developed. Thus a fist or claw is almost always effective against creatures and mages with ancient wards, and clubs, swords, and bows are more likely to be effective than firearms, flamethrowers, and grenades… though if someone is carrying around an ancient design of Chinese fire lance, there’s a good chance they are doing so for a good reason.
Gravedigger Clan
When you need a body removed quickly and without evidence, but also need it to be treated with respect and buried with honors and traditions proper to its life, you call the Gravedigger Clan. A cult devoted to a wide range of gods of the dead and burial from different pantheons, and devoted to preventing the rise of undead and corpse-curses, the Gravedigger Clan is neutral in all other affiars, and offer their services fast and free to anyone who knows how to get hold of them.
The Mask Arcade
The Mask Arcade is a massive dance club and cocktail lounge that has multiple tiers, indoor and outdoor areas, several different themes, and a number of private, semi-private, and VIP areas scattered about its premises. Numerous street performers wander about at all times, sometimes stunt exhibitions are held, and there are numerous small stages where weird acts can perform. It also requires all attendees to dress in costume, and taking pictures is forbidden and strictly enforced. There’s always a line to get in, and bouncers walk the line and let people with costumes with “the right look for tonight’s theme” go in ahead of the line through various side entrances.
Officially, this is because it’s schtick is to be a nonstop costume ball cranked to 11 that attracts celebrities and . Actually, it’s because the Mask Arcade is designed to be a neutral ground for Hidden World ladies, lords, adventurers, monsters, and agents to meet, move about freely (even if they have horns, or fangs, or wear armored trench coats and carry katanas), and do business.
Ninjamancy
Almost no one is attacked by hordes of ninja. However, all true ninjas are trained in the art of summoning, and everything they summon looks like a ninja, and appears when conjured by stepping out of shadows and from behind cover. These conjureninjas can be used to try to assassinate, or cover a true ninja’s escape, but they are also often used as distractions while the true ninja carries out their actual mission, or as cover to all the true ninja to get closer to a target while looking just like the summoned ninjamancy. As a result hordes of ninja appear to jump out of nowhere, and experienced Hidden World agents know you need to kill them all, because one might be the true ninja you can’t afford to ignore.
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ShadowFinder Supporting Players
We’re coming up on a year I have been working on ShadowFinder, though not with the regularity I’d like. Because I have big way-behind projects after carving out a period of time to try to “finish” it (which, for various reasons didn’t do anything like get it finished), I’ve pretty much been restricted to jotting down notes when ideas come to me, and sneaking in some work on the project as blog posts (since I have blog subscribers who have already paid me for this content, so I’m obligated to keep doing this along with the other projects I am obligated to do, as opposed to ShadowFinder which is entirely optional).
But even slow and sporadic progress is progress. And today, I’m sharing some conceptual material I wrote early on in the process. I wanted to think about the types of characters I would want to be able to have as supporting players (and, perhaps, PCs). Things like this are among my guiding ideas when I work on a game setting or expansion — conceptually what do I want to be able to make with these rules and any advice that comes with them?
Earlton and Alyssal
Earlton Fust is an old, old zombie. He cannot see, smell, feel, or taste, and his hearing is weak. But for all that he is slow and clumsy, he possesses vast strength and resilience.
Alyssal Rein is a very recent ghost. Though she cannot be wounded, moments that would have harmed her living self still cause her to flee into the umbra. In fact, she can barely affect the physical world, her powers largely limited to her senses, speaking to the dead, and the ability to possess corpses.
Corpses like Earlton Fust.
She can literally become his eyes and ears, feeding him her senses, animating his flesh to be swift and nimble. In turn, his flesh can impact the mortal world in ways she cannot, his tongue speak words she wishes spoken. It is a strange arrangement, two dead souls operating in the world of the living, but they both appreciate its benefits.
Earlton was a private detective a century ago. Alyssal was murdered by an unknown foe a year ago.
They fight crime.
[I see Earlton as a specific build for a mechanic character with the exocortex option, except the “exocortex” is the ghost Alyssal. That leads to needing rules about mechanics that are magic-based rather than technology-based, which can then also be used for magical girls, ring wielders, and maybe lycanthropes. Which begins to sound like an alternate class, which is fine, I have technicians for most of what mechanics do with tech, and with a few tweaks the mechanic drone option can become a pet class that summons a spirit to fight for them, like an eidolon…]
The Sleepwalker
Michar Micharland, known in some circles as The Sleepwalker, knows the real world is one free of magic and monsters. So, despite his memories, he rejects the idea that he was hit by a bus, killed, and brought back to life with eldritch powers.
Well, he thinks the bus part probably happened.
Which means if he’s not dead (and this seems too weird to be either heaven or hell) then he must be in a coma, and everything he is experiencing is just his brain firing off random neurons to keep itself amused until he wakes. If he wakes.
So, he has no fear. No concern. He believes to his core that everyone he meets is just part of his coma-induced dreams. None of it is real. Nothing can actually damage him, even if he feels pain. (Flashes of the pain from the bus impact leaking into his subconscious, maybe). He believes he’s walking through an imaginary world where none of his actions have consequences.
So, he helps as many people as he can. Because that’s his idea of a fulfilling dream. Doing anything else would make him feel like an ass.
[The Sleepwalker could be a mystic with a connection to dreams, or a warlock using my new warlock class. But he also needs something that lets him lean on his belief system, even if it’s wrong, to overcome things like pain and fear. That sounds a lot like a feat or archetype which could then be used for people with strong religious convictions, or the ability to fall back on scientific rigor, or who think they are the Chosen One.]
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I have a Patreon. It helps me carve out the time needed to create these blog posts, and is a great way to let me know what kind of content you enjoy. If you’d like to see more Starfinder or ShadowFinder content (or more rules for other game systems, fiction, game industry essays, game design articles, worldbuilding tips, whatever!), try joining for just a few bucks and month and letting me know!
“Imaginary Friend,” a Quirky Feat for ShadowFinder (a Starfinder Play Mode)
This feat is specifically designed for ShadowFinder, a play mode for Starfinder, but should work in any Starfinder game where it is thematically appropriate. It’s in a category called “Quirky Feats,” that a GM may exclude from a ShadowFinder game… or might give every character one as a bonus when the campaign starts, or after a major event. In this case, the feat represents a character with an apparently at least semi-real “imaginary friend.”
Imaginary Friend (Quirky)
There’s a…. thing, that talks to you sometimes. It may look like an animated mouse in a trenchcoat with pistols. Or a stuffed animal from your childhood. Or a translucent ghost costume made out of a sheet. You’re not sure it’s real. But it seems to want to help, and it’s not like you haven’t seen weirder things…
Benefit: With very rare exceptions, only see your imaginary friend.

Most of the time, your imaginary friend comes and goes without doing a lot to help (often making snide remarks in the process). Your GM can use this as an opportunity to have an NPC around to crack jokes, though they should be sure they aren’t so annoying with this that you (the player) regret spending a precious feat slot to get an imaginary friend. It’s fine for your character to wish they didn’t have an imaginary friend, but overall you should be enjoying the experience.
You can choose to have your character’s imaginary friend take one of the following actions. This is not dependent on the character being free to act—the action occurs on the character’s initiative count, but can be taken even if the character is unconscious, paralyzed, nauseated, or unable to take any action. Once you have used this ability you cannot do so again until after you next recuperate*, and doing so requires you to expend a number of Resolve Points equal to the number of times you’ve already used the ability in the same day.
Demoralize: The imaginary friend briefly reveals itself to a creature, and makes a check to demoralize that creature, as the demoralize task of Intimidate. The check has a special bonus bonus equal to your level plus your Charisma modifier or key ability modifier, whichever is higher.
Gather Information: The imaginary friend zooms around and spies on conversations… but somewhat at random. Imaginary friend comes back with the information at the beginning of your next turn, and this functions as the gather information task of Diplomacy. The check has a special bonus bonus equal to your level plus your Charisma modifier or key ability modifier, whichever is higher.
Look Out!: Your imaginary friend warns you about an ethereal or incorporeal creature, which it can see even if you don’t. As a move action each round you can listen to it try to describe what and where the threat is. This allows you to make an appropriate recall knowledge check to identify the creature, prevents you from being flat-footed or off-target against it, and tells you what square it is in. This lasts for one round per character level, after which your imaginary friend falls unconscious in dizzy frustration.
Snap Out of It: The imaginary friend tries to snap you out of a mind-affecting effect. It may do this gentle… or it may blow an airhorn in your ear, set fire to your toes, or treat your nose as a punching bag, depending on its personality and attitude. You gain an immediate saving throw against one mind-affecting effect you are under, at the same DC as its original save. This is a boosted** roll. If the save succeeds, the effect ends.
*Recuperate is my proposed term for when a character takes 10 minutes and expends a Resolve Point to regain all their Stamina Points.
**Boosted is a term that refers to a d20 roll with a special benefit. If the d20 result is a 1-10 (the die shows a 1-10), you add +10 to the result (so, effectively, a boosted roll always results in a value from 11-20, though only an actual 20 on the die counts as a “natural” 20).
Patreon
I have a Patreon. It helps me carve out the time needed to create these blog posts, and is a great way to let me know what kind of content you enjoy. If you’d like to see more Starfinder or ShadowFinder content (or more rules for other game systems, fiction, game industry essays, game design articles, worldbuilding tips, whatever!), try joining for just a few bucks and month and letting me know!
Weapons in ShadowFinder, a Starfinder Play Mode
In the upcoming ShadowFinder modern fantasy play mode for Starfinder, weapons don’t do a set damage based on their item level, and mundane, typical weapons aren’t bought with credits. Instead anything reasonably available to a typical person (bolt cutters, road flares, blue jeans, baseball bats, cars, firearms, bandages, and so on) use a wealth mechanic to see if you can find and afford what you want when you want it. Credits are used for more esoteric items, such as magic and hybrid equipment, fringe science, psychically imbued crystals, alien relics, and so on.
Similarly, rather than a set damage, weapons have their damage based on a damage tier, which is calculated using a set of rules that are being polished as we speak. If you are proficient with a weapon, it’s base damage tier is your character level. If you are not proficient, it’s base damage tier is your base attack bonus -2 (and you suffer the normal nonproficiency penalty to your attack roll). Weapons then have a damage tier modifier, often based on things like their critical hit effects and special properties.
Here’s a sample of what some melee weapons will look like, and how the damage tier chart works.
Baseball Bat (1-h/2-h Basic Melee Weapon)
Wealth Check: 10
Damage Tier -1 (B)
Properties: Analog, archaic,
Critical Hit Effect: Knockdown
Stiletto (Operative Melee Weapon)
Wealth Check: 12
Damage Tier +0 (P)
Properties: Analog, conceal, feint
Critical Hit Effect: Bleed (1d6, +1d6/5 damage tiers)
Single Target Melee KAC Weapons
Damage 1-h 2-h 1-h 2-h
Tier Adv. Adv. Oprtv Basic Basic
-3 1d2 1d4 1 pt. 1 pt. 1d2
-2 1d3 1d4 1 pt. 1 pt. 1d3
-1 1d3 1d4 1 pt. 1d3 1d3
0 1d4 1d6 1d3 1d4 1d4
1 1d4 1d6 1d3 1d4 1d6
2 1d6 1d6 1d4 1d6 1d6
3 1d6 1d8 1d4 1d6 1d6
4 1d8 1d8 1d4 1d6 1d8
5 1d8 1d10 1d6 1d8 1d8
6 2d4 2d6 1d6 1d8 1d10
7 2d6 2d8 1d8 1d10 1d12
8 2d8 3d6 2d4 1d10 2d8
9 3d6 4d6 2d6 2d8 3d6
10 4d6 5d6 3d4 2d8 3d8
11 5d6 4d8 2d8 2d10 4d6
12 4d8 6d6 3d6 3d8 5d6
13 6d6 7d6 3d8 3d10 4d8
14 6d8 9d6 4d6 4d8 5d8
15 9d6 10d6 5d6 5d8 8d6
16 10d6 11d6 6d6 6d8 9d6
17 12d6 13d6 7d6 7d8 10d6
18 14d6 15d6 8d6 8d8 12d6
19 16d6 17d6 9d6 9d8 13d6
20 18d6 20d6 10d6 11d8 15d6
21 20d6 22d6 11d6 12d8 17d6
22 22d6 25d6 12d6 13d8 19d6
Patreon
I have a Patreon. It helps me carve out the time needed to create these blog posts, and is a great way to let me know what kind of content you enjoy. If you’d like to see more Starfinder or ShadowFinder content (or more rules for other game systems, fiction, game industry essays, game design articles, worldbuilding tips, whatever!), try joining for just a few bucks and month and letting me know!
ShadowFinder Bestiary Teaser: Soul Lamprey
As work on ShadowFinder continues, I will occasionally preview things that will be in its Bestiary section. Many of these will be creatures from the ShadowBlast, but others will fill in the “normal” niches a typical modern adventure/scifi/fantasy/surreal/horror game might need.
For each of these, I plan to show some art, talk a bit about why I’m putting it in the ShadowFinder Core Book, and enough info a GM could create a version of the monster at any CR, using the standard Starfinder creature creation rules. In the final entries for these in the Core Book there will be at least one full stat block, but I do also want to give enough info on special abilities and role in an adventure that a GM can reliably make versions at different CRs as they need them.
So, let’s start with the soul lamprey.

Soul lampreys are creatures apparently native to the Shadowblast (though like anything in the Shadowblast, they might originally be from somewhere else and just trapped in that dim demiplane). They are driven by an insatiable hunger to consume the determination and drive of sapient beings, as well as the flesh of any sentient creature they can eat while it still lives.
The idea behind the soul lamprey is to get some of the player-dread that creatures that inflicted level drains and negative levels did in older ttRPGs… without the bookkeeping, refiguring, and literal inability to keep playing the character usefully in the same adventure that those rules often inflicted on players. Instead, soul lampreys eat Resolve Points.
To build a soul lamprey, you use a combatant stat array, a single bite melee attack that deals piercing damage, and give it these special abilities and adjustments:
Slow But Tough: A soul lamprey has EAC and KAC 2 lower than normal for the combatant array at its level, but also has 25% more Hit Points.
Devour Determination (Su): When a soul lamprey damages a target with tis bite, the target must make both a Fortitude and Will save. If it makes both saves, there is no additional affect. If the target fails 1 save, it loses 1 Resolve Point. If it fails both saves, is drained of 1d4 Resolve Points (+1d4 for every 4 full levels of the lamprey’s CR). Drained RP do not recover normally. Instead, each time the character regains their daily abilities, they reroll the Fort and Will saves, regaining 1 RP for each save they succeed at each day. If they make both saves, they regain an addition 1d4 RP (+1d4 for ever 4 character levels they have).
The soul lampry gains these Resolve Points, and can use them normally and to fuel its special abilities. While a soul lamprey has RP, any creature missing RP from a soul lamprey drain is flat-footed and off-target to the soul lamprey.
Digest Determination (Su): When a wounded soul lamprey devours determination, it can choose to expend any number of the RP it absorbs to heal itself as part of the attack. For each RP expended, it regains 1d8 HP + 1/2 its CR. It may only do this when it absorbs new RP.
Target Sense (Su): As part of any action it takes, a soul lamprey can expend 1 RP to gain blindsight (telepathy) with a range of 5 feet per CR of the lamprey. This only detects creatures missing RP drained by a soul lamprey. The ability lasts for 10 minutes per CR of the soul lamprey.
Trap Blind (Ex): A soul lamprey is vulnerable to attacks from things that lack their own determination. This includes traps, mindless creatures, and mechanic’s drones. Such attacks gain a +2 bonus to attack rolls and save DCs, and deal double damage, against soul lampreys.
Shudder Step (Su): When a creature damages a soul lamprey with a ranged attack, the soul lamprey can follow the trace of psychic energy carried by the decision to attack it back to its point of origin, teleporting to be adjacent to the attacker (or as close as possible if there is no safe space adjacent to the attacker). This does not take an action, but does expend 1 Resolve Point.
Want to get news about ShadowFinder as it develops? Send an email to shadowfinderlist@gmail.com and ask to sign up, so we can send you notifications for this project and its tie-ins!

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ShadowFinder Gazetteer: Elseward
ShadowFinder continues to work towards release. Some of the material I am drawing on for parts of the worldbuilding in this play mode are heavily inspired by things that helped me through some dark times in my life. Elseward is one of those.

Elseward
Some of the areas in the demiplane known as the Shadowblast that are very close to the Material Plane. These regions, called Shallows, appear to be tightly bound to some mortal concepts or emotions and follow special rules compared to the rest of the Shadowblast. There exist natives of the Material Plane who are survivors of severe trauma and depression that can access a Shallows section of the Shadowblast known as Elseward – a violent, vicious realm that mixes dense noir city and surreal untamed jungle with no apparent rhyme or reason – usually without even knowing it. Projecting themselves partially into the Shallows, these Elsewarders exist in both their native Material Planes and the Elseward Shallow. They see and experience things other folk around them in the Material world do not, often mistaking Elseward events for daydreams. Some Elsewarders even develop special powers with the Shallows, creating a ethereal ShadowSelf that exists within Elseward even when the Elsewarders are not connected to it. Elsewarders then experience their ShadowSelf lives through dreams and reveries.
In a few cases, Elsewarders manage to heal and slowly disconnect from the Shallow, perhaps leaving their ShadowSelf behind, perhaps integrating it into themselves and departing from Elseward entirely. But more often, they eventually begin to draw bits of that Shallow region out into the Material Plane, beginning with minor Shadowblastoi creatures crossing over and growing in number, complexity, and power as time goes on. Such a traveller from Elseward into the Material Plane is known as a Drawesle, and its behavior is often dictated by the fears and nightmares of the Elsewarder that drew it through the Shallow.

It’s common for Drawesles to destroy their related Elsewarder, ending their link to the Material world and sending them back to the Shadowblast. Elsewarders with extreme will or some eldritch power source sometimes instead begin to spread their vision of the Elseward into their own world, and in rare cases even forge links between the Elseward and Material world denizens to whom they have strong (not necessarily positive) emotional connections. These advanced situations can result in small groups or even tightly-linked communities existing in both their own realities and the Elseward at once, appearing to experience ongoing shared dreams and hallucinations.
Some Elsewarders continue to hop back-and-forth for decades, with more and more links to the Shadowblast connecting to them as time passes. When the Elsewarder is secure, supported, and dealing with their trauma well, incidents are mostly just deep dreams and odd noises in dark corners, and easily dismissed by them and others as a wandering mind’s intrusive thoughts. When exposed to new trauma or under high stress, these well-worn links can actually anchor parts of Elseward to the Material world, generally in abandoned, remote, or chaotic, badly monitored locations. This leads to Drawesles building a Material Plane power base, seeking to torment the Elsewarder and those close to them to further strengthen the link.
In these cases, outside intervention is often needed to save the Elsewarder and those near them from their literal personal demons. This may be done by seeking out and ending the Drawesles’ base of operations on the Material world, or it may require a trip into Elseward to cut off the intrusion from the source. Of course, destroying a trauma-induced monstrosity preying on an Elsewarder doesn’t end the Elsewarder’s underlying issues. But it can help give them space to do the work needed to heal themselves, and give reassurance that their trials are very, very real.

DEEP ELSEWARDER [QUIRKY]
At one time, you were tightly linked to the Elseward, or some other section of the Shallows in the Shadowblast, and you have developed special powers that only function there.
Benefit: For each character level, you can select one tier of enigma power, one bonus feat for which you meet the prerequisites, or one level of spellcasting from a specific spellcaster class list (gaining spells known, spells per day, and a caster level equal to your levels of spellcasting selected with this feat). These are separate from your normal feats and (if you have them) enigma powers and spells. Abilities gained through this feat only function in Beachheads and Shallows of the Shadowblast.
Want to get news about ShadowFinder as it develops? Send an email to shadowfinderlist@gmail.com and ask to sign up, so we can send you notifications for this project and its tie-ins!

PATREON!
If you enjoy any of my various thoughts, ideas, and posts, please consider adding a drop of support through my Patreon campaign!, or dropping a cup of coffee worth of support at my Ko-Fi (which is also filled with pics of my roommate’s cat).
ShadowFinder Organizations: The Black
Again, some legal stuff.
Nothing on this page is OGL. This is a post of Community Use content of Paizo materials.
Obviously there’s going to be a “ShadowFinder Society” as an in-world group in the upcoming Starfinder Infinite product, the ShadowFinder Core Book. But that’s far from the only group dealing with the issues created by the Shadowblast. One of the more potent is the elite collective known as the Black.
The Black
The Black is among the most powerful coalitions of spellcasters and scientists on either Rasputin’s Legacy Earth or Golarion, and they work ceaselessly to build ways for their members and others to comfortably exist in other planes, and to find ways to cross in and out of the Shadowblast (and to a lesser extent, other planes of existence). They do insist that any who make use of the transportation they can sometimes provide be respectful and considerate of the new plane traveled to, but also believe that locking creatures behind planar barriers inevitably lead to inequality and tribalism. When the Black finds a subjugated group trapped in an alternate plane, they often focus their efforts one stablisg routes for those under the yoke toescape, moving them to new planes of reality if necessary.
While most people aware of it consider the battle against the Shadowblast to be a war of light against darkness, the Black philosophically take the other approach. They see it as a battle of true dark against the dim, hazy, often tricky gloom of shadow. To members of the Black, the problem with quantifying everything as light and dark is that light often causes shadows, and within those shadows illusion and misperception can run rampant. They further see than many groups have a illumination-at-any-cost rule, claiming the ends justify the means, and this often leads to tyranny and abuse as warriors of the light cross ethical lines to destroy any darkness-themed creature they encounter. The methodology of the Black is different, seeking to understand the nature of things and then seek a solution built from that understanding.
The fact that numerous creatures of the Shadowblast hate their existence within it is, to the Black, those Shadowblastoi’s primary motivation for violent and dangerous assaults into the Material Plane. If the creatures of the Shadowblast could be freed of the pain regions of their own home plane cause them, or given a way to travel to other realities without needing sacrifices, and rituals, and riots, the Black believe harmonious co-existence could be achieved. Further, given some planar slivers are nearly infinite in their scape, surely if any creature could move to any realm of reality that would end the need to fight over territory, resources, and borders.
Many groups consider the Black hopelessly naïve, insisting that evil is real and absolute, and that seeking ways to comfort the enemy is treasonous to the Material Plane itself. In general, agents of the Black acknowledge evil is real and most be opposed – they simply decry any effort to categorize all of any one species, region, or even plane of existence as inherently evil. After all, if even angels and fall and devils can be redeemed, is that not proof that each individual must be judged on their own merits, rather than as broad categorizations? And, if so, doesn’t that mean any system that encourages valuation based on group factors itself inherently unable to create true equity and justice?
Most other large-scale groups aware of the Shadowblast see the Black as a branch of the enemy at worst, or dangerous fools at best. As a result, the Black keep their membership tightly controlled, with only senior members of their collective allowed to engage in recruitment, and only the most competent of veteran planar travelers considered for membership. Until someone has a number of significant deeds to their name, the Black feels it’s premature to try to judge them by those deeds. However, individual agents of the Black often act as patrons and allies to less-connected or inexperienced hunters, healers, and researchers, both to build independent networks of useful allies, and to keep tabs on those who might someday be considered for inclusion in the Black.
The official positions of the Bannerfolk, Lighthouse, and ShadowFinder Society is to treat the Black as too dangerous to get involved with, but that position is not universal among the actual members of those organizations. There are individuals among those groups who hear a ring of truth in the philosophy of the Black, and are at least willing to hear out the proposals made by its agents.

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ShadowFinder: The Shadowblast
So, first some legal stuff.
Nothing on this page is OGL. This is a post of Community Use content of Paizo materials.
One element of the upcoming Starfinder Infinite product, the ShadowFinder Core Book, is the demiplane known as the “Shadowblast.” Obviously that demiplane gets a fairly lengthy writeup in the Core Book, but I haven’t talked much about what it’s actually like in these previews, So, here’s an excerpt about one of the Shadowblast’s regions. (And yeah, “Shadowblastoi” get an entry as well, but the short version is that they are creatures stuck in the Shadowblast, who want to get out.)
Shadowblast Regions
The Shadowblast is often described in terms of an ocean, with Beachheads, Shallows, Reefs, the Faraway, and the Deeps.
Beachheads
“Beachheads” are areas literally overlapping with another plane (so a creature not bound to the Shadowblast can simply walk from the Shadowblast into the overlapped plane, and a ShadowWalker could walk from that plane into the Shadowblast). A creature that is not a ShadowWalker could walk right past the overlap with nothing more than a sense of something weird going on. But a ShadowWalker on the Material Plane might take a wrong turn and go from their own world to the Beachhead, without having any idea why the city around them suddenly looks like a mostly-abandoned ruin. A ShadowWalker can also walk from the Beachhead back to their own Plane… if they know what route will take them back, and if the Beachhead doesn’t fade away first.

A Beachhead overlapping the Ethereal or Astral plane generally looks like a fog or mist.Those connected to elemental planes are often a mix of that element and ruined vehicles or land. Those overlapping slivers of infernal planes often seem to be endless buildings with offices dedicated to sin and torture, and fiendish residents sometimes don’t notice the difference until the Beachhead fades.
Beachheads are temporary, and generally caused by massive amount of undirected energy (ranging from mass death to nuclear power meltdowns and interrupted rituals) or planar or astrological conjunctions. They may last as little as a few minutes, or as long as a few months. The area near the overlap on the connected plane is usually lightly-populated and/or hard to reach. Things from the Shadowblast yearn to escape it, and seek Beachheads—often causing trouble for the denizens of the connected plane. However, many powerful Shadowblastoi cannot pass through unless a Beachhead is reinforced, which requires energy—emotional, magical, or technological—to be released chaotically on the other plane. Some beachheads need specific kinds of energy, while others grow stronger with anything from a rock concert to a political riot to a wildfire.
But the majority of Shadowblastoi that pass through a Beachhead are sucked back into the Shadowblast when the Beachhead closes. The amount of energy to keep a Beachhead open slowly increases with time, so a permanent Beachhead seems impossible. Even so, the Shadowblastoi desperate to escape their demiplane keep trying to find new forms of energy or magic to make a Beachhead last, or be able to create one at-will. Since the planar barriers are thinnest between the Shadowblast and the Material Plane around Lost Golarion and Rasputin’s Legacy Earth, those are the places Shadowblastoi most often seek to invade (though certainly efforts to wedge open Beachheads to other planes are also undertaken).
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