Legendary Creature — Angel 8/8, 5WWW (8)
Mythic Rare
Flying, vigilance
Avacyn, Angel of Hope and other permanents you control are indestructible.
A golden helix streaked skyward from the Helvault. A thunderous explosion shattered the silver monolith and Avacyn emerged, free from her prison at last.
Illus. Jason Chan

5/1/2012: Indestructible creatures still have damage marked on them, even though that damage won't destroy them. If Avacyn leaves the battlefield, any previously indestructible creature that has lethal damage marked on it will be destroyed.
5/1/2012: An indestructible permanent can't be destroyed, but it can still be sacrificed, exiled, put into a graveyard, and so on.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Extended (Type 1.X)
Legal in Standard (Type 2)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern