Board Thread:Warhammer 40k General Discussion/@comment-27642965-20160211003725/@comment-26420219-20180612165125

The Flood that nearly destroyed the Forerunners are quite the same as Nurgle’s Rot, in fact Nurgle’s Rot is even more powerful since it has no physical body you could attack. If you follow the lore Nurgle has countless plagues ready to unleash against the galaxy and it’s only his war against the other Chaos God that prevent him from doing so. Since Nurgle is also involved in the creation of the Anathame which can kill EVERYTHING - litterally - Nurgle has the power to infect and destroy your Guyvers. Also Nurgle’s poxes and other diseases don’t need a body to affect you - he simply enjoys it, they are also psychic afflictions like the doubtworms : as soon as you doubt, you are affected and devolve into some sort of frenetic barbarian - which makes him capable of dealing with all non-pysical entities.

Tzeentch on his own is able to defeat almost everything, the combo of the power of the Well of Eternity, Kairo’s abilities (knows all of the past, sees all of the future and all the possibilities of it) and Tzeentch own powers make him unbeatable. Should a threath arise, Tzeentch can manipulate time and space to prevent it, lock you in a pocket dimension, zap you in the warp for the daemons to feed on your soul/psychic energy or transform your body into a mewling Chaos Spawn he can than incinerate, including other gods - from any fictional universe they may be, even your cherished SCP are nothing but more objects to collect and store somewhere in the Impossible Fortress or keep in little bottles as Brainiac did in the DC-multi-verse.