Editing Gene-seed (section)

===21st Founding ===
{{Main|21st Founding}}
Over the millennia, further mutations have afflicted the many Successor Chapters, but the 21st or "Cursed" Founding deserves a special mention, because a bunch of [[Adeptus Mechanicus|tech-priests]] decided that they wanted to try and fix the flaws, but failed so hard they actually created some new ones.

* Bursting into Flames: Yes, the [[Flame Falcons]] really were covered in fire. The Flame Falcons thought it was a blessing from the [[God-Emperor of Mankind]], but the [[Inquisition]] disagreed, and sent the [[Grey Knights]] to wipe them out.
* Bone Growths: Due to a malfunctioning Ossmudula, the [[Black Dragons]] suffer a bone solid growth to harden and extend from their forehead and forearms during times of stress. The ones on the forearm can be used as weapons against unarmored opponents, so they decided to coat them in adamantium. So in essence, they're space-Wolverine-after-the-bone-claws kind of guys. Issue is that this is a very visible mutation, and as this is the [[Grimdark|grim]][[Derp|derp]] Imperium, mutations from the sacred human form are EVUL, even if they are fucking awesome.
* Indestructibility: The [[Sons of Antaeus]] are much tougher than normal marines, and nobody knows why. Some speculate something about a super-reinforced skeleton, some say it's [[Nurgle]]'s doing, etc. The only real truth to it is that there's some sort of mutation present in the gene-seed.
* Bad Luck: The [[Lamenters]] chapter's modifications seemed to have fixed the Red Thirst and Black Rage, but as a trade off they seem to be cursed with some of the worst possible luck, essentially giving up the Khornate Curse for a Tzeentchian one. Many other chapters of the 21st Founding were also cursed with bad luck but the Lamenters are the only known ones that didn't get wiped out by it so that may say something about how badass they are.