Wall of Reverence

Defender, flying
At the beginning of your end step, you may gain life equal to the power of target creature you control.

Aegis of the Gods

You have hexproof. (You can't be the target of spells or abilities your opponents control.)

Sacrifice Children of Korlis: You gain life equal to the life you've lost this turn. (Damage causes loss of life.)

Lifelink
{4}: Exchange your life total with Evra, Halcyon Witness's power.

Flying
Sacrifice Selfless Spirit: Creatures you control gain indestructible until end of turn.