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.

Children of Korlis

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

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

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

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