Akroma, the Waning Fury

Flying, vigilance
Whenever Akroma, the Waning Fury is dealt noncombat damage, you gain that much life.
At the beginning of your end step, if you both own and control Akroma, the Waning Fury and a creature named Tariel, Diminished Reckoner, exile them, then meld them into Akriel, Vision of Anarchy.
She now channels only Emrakul's powers.