Editing Alternate Heresy: Derailments (section)

== Grand Slaugh/Simulacra Onslaught ==
In normal timeline, [[Slaugh]] and [[Simulacra]] lurk around shadows, not doing anything of global importance. There, they decide to form a faction in pursuit of new knowledge, data - and later, genes - trying to, and possible even achieving, total galactic domination. While both species have different abilities, both have ability to to get knowledge of being whose brain they eat - what will be exploited in this timeline. Differences between "runs" are only discernible at "early game" - as in late game, xenos alter themselves into unrecognizable state, using mixed tech, bio-technologies and various magic. Because both of them become undifferentiable in the long run, they are referred to as "brain-eaters"

In this timeline, brain-eating xenos use their ability to get knowledge of beings whose brain they eat, to steal various useful knowledge. This includes technologies, abilities and knowledge of how to cast magic, gene-stealing tech (from [[Genestealers]] and [[Tyranid]]) to steal genes of other beings (especially to steal genes from [[Orks]]), and also skills of others. They utilize this to make crazy mixed, super-developed tech, as it would have things like [[Jokaero]] tech mixed in, and also [[Ork]] tech - both utilized a lot more efficiently than by their original owners. And also, due to combination of abilities, reality-bending, occult lore, and spellcasting knowledge/skills of [[Orks]], [[Chaos]], other reality-warping species (like [[Hrud]]), and spellcasters of various types ([[Psykers]], [[Pariah]]) - they become absurdly powerful at various types of wizardy. And they also alter their bodies into even more nightmarish and powerful, using cybernetics of this mixed tech, bio-technological augmentations and using stolen genes.

Units are more overpowered than those in "Grand Tech Steal" - as neither [[Slaugh]], nor [[Simulacra]] have any moral constrains on using technologies, magic and tactics. While their numbers start low, after altering themselves, they can skyrocket - [[Genestealer]]+[[Tyranid]]+[[Ork]] genes incorporated and souped-up with strong magic, mad science and bio-engineering will allow them to explosively breed (think Ork sporadic reproduction - but without vulnerabilities like acid or fire), and overpower anything what attacks them. Because even things like [[Jokaero]] tech get thrown into the mix, these heavily-altered brain-eaters can overpower just any normal canon faction once they get momentum. If both [[Slaugh]] and [[Simulacra]] form their factions, they are likely to mutually assimilate, turning into one faction - as they have one matching agenda ("Technologies are so much more powerful, when they are based on eating brains of the millions").

Unlike with [[Space Marines]] from "Grand Tech Steal", whose abilities to get knowledge by eating brains are debatable, [[Slaugh]] and [[Simulacra]] being able to get knowledge this way if 100% canon. Generally, difference between species is only discernible at early stages - generally, [[Slaugh]] are doing better in the "early game", as they are a lot more physically robust and have their unique tech what is pretty strong even from start; [[Simulacra]] have nothing of this, instead having ability to temporarily turn into creature they ate - and more over, it's not even known if they get knowledge from brains for permanent time, or temporarily. This means what this scenario is a lot more likely with [[Slaugh]].

This faction of brain-eating mad scientists would have strange relations with proper [[Chaos]]: brain-eaters would use a lot of [[Chaos]]-like magic and mess with reality, utilizing power of [[Warp]] - but, they would believe what [[Chaos]], and [[Chaos Gods]] by extensions, ''should serve them'' - not the other way around. Because neither side would give up their position on "who serves who", brain-eaters would make a splinter faction hostile to mainstream [[Chaos]].

For normal factions, the most reasonable choice would be to stop the brain-eating mad scientists before they get too powerful. If brain-eaters get fully-powered, normal factions will be overrun and outgunned - becoming little more than a fodder to this munchkinish, horrible amalgamation. Even union of most canon races would not be enough. Ability to steal knowledge, later genes, and whatnot from others could also give brain-eaters major strategic advantage - because, if they ever encountered someone comparable or stronger than themselves, and who is organical, they could steal their stuff and add it to their own stuff pool - therefore making themselves stronger than enemy. Therefore, they can quickly get upper hand against "Grand Tech Steal" humans and "Galactic Federation" from titular timeline - and even try to get even - and eventually stronger - with overpowered factions from "The Imperium of Machines", "The Imperial bright future", "No Time To Sleep".

The only caveat is what brain-eaters can't steal tech of inorganic beings from the start - like [[Necrons]], or "The Imperium of Machines" [[Men of Iron]] descendants. However, they can steal tech of someone who can steal tech from robots - or steal tech of someone so advanced, what they could reverse-engineer robot tech the old-fashioned ways (like any non-brain-eating man does). Or steal tech what would allow them to alter their biology - and then give themselves the ability to get data from eating and digesting computers and other inorganic things.

All of this can happen on pretty much any point of time and space: from earliest time periods, to middle when there are no one yet to stop them, to "our times" of M43+, and in even further future. It takes just 1 [[Slaugh]] or [[Simulacra]], who figured out what he could and should take over the Galaxy, to start this entire scheme and indeed become galactic threat. And all this could happen multiple times per timeline. More over - theoretically, it could happen in the main timeline, as ''at any moment'' a brain-eater can get this bright idea and start snowballing the Galaxy - if it didn't happened yet, it may happen in the future.