Quote Originally Posted by Brother Oni View Post
Valkyr gets functional invulnerability, but is reliant on her energy pool on top of staying away from nullifiers (that said, she only becomes 'really tough to kill' rather than invulnerable). She additionally can't use defensive arcanes while Hysteria is up, Arcane Energise especially.
Uh, what? Arcane Energise will still trigger while she's in Hysteria - it's one of the few things that is always guaranteed to give you energy while channeling an ability (when it triggers of course). As she's invulnerable in Hysteria and her Talons have innate lifesteal, it doesn't matter that much that the Guardian and Grace won't trigge * as long as you keep Hysteria up.

* And it wouldn't surprise my to learn they might trigger anyway - the wiki page on Grace doesn't function while Rhino's Iron Skin, but makes no mention of other invulnerability-causing powers.