With them not knowing what to do with it half the time, I feel it exposes them to weakness a bit more, it’s something most other Xenos have the upper hand on. Necrons have a rapid regeneration technology and a shroud of ancient gods at their disposal. But they sorta know where to at least target xD
Sadly Orcs in WH tend to believe in two different gods at the same time without realising it and think their own kind is praising a different god which results in more civil war among each other than anything else xD I love them for how silly they are, their power is their own worst enemy 😂
Gosh I feel like that’s a tough one! For plot armour purposes I’d presume the casual space marine, maybe the custodes. but given how many vessels of heresy are out in the wild, I could see Necrons being a real ground shaker. Saying that though, I have Tyranids, I feel like they’ll keep eating 😂