Metropolis Reformer

Flying, vigilance
You have hexproof.
Whenever this creature is dealt damage, you gain that much life.

Kami of the Honored Dead

Flying
Whenever this creature is dealt damage, you gain that much life.
Soulshift 6 (When this creature dies, you may return target Spirit card with mana value 6 or less from your graveyard to your hand.)

Imperial Ceratops

Enrage — Whenever this creature is dealt damage, you gain 2 life.

Wall of Hope

Defender (This creature can't attack.)
Whenever this creature is dealt damage, you gain that much life.

Trapjaw Tyrant

Enrage — Whenever this creature is dealt damage, exile target creature an opponent controls until this creature leaves the battlefield.

Orim, Samite Healer

{T}: Prevent the next 3 damage that would be dealt to any target this turn.

Pious Warrior

Whenever this creature is dealt combat damage, you gain that much life.

Wall of Essence

Defender (This creature can't attack.)
Whenever this creature is dealt combat damage, you gain that much life.

Bellowing Aegisaur

Enrage — Whenever this creature is dealt damage, put a +1/+1 counter on each other creature you control.

Flumph

Defender, flying
Whenever this creature is dealt damage, you and target opponent each draw a card.