Archangel Avacyn // Avacyn, the Purifier [From the Vault: Transform]

Flash
Flying, vigilance
When Archangel Avacyn enters the battlefield, creatures you control gain indestructible until end of turn.
When a non-Angel creature you control dies, transform Archangel Avacyn at the beginning of the next upkeep.

FlyingWhen this creature transforms into Avacyn, the Purifier, it deals 3 damage to each other creature and each opponent. “Wings that once bore hope are now stained with blood. She is our guardian no longer.”Grete, cathar apostate