I know this should be moved to a new category named AVR but i couldn't wait.
From MTG Salvation:
Avacyn,Angel of Hope
Legendary Creature - Angel 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 monolith, and Avacyn emerged, free from her prison at last. Illus. Jason Chan #6/244 8/8
IMO highly unplayable in Constructed as Fiend Hunter, Oblivion Ring, Tragic Slip, Sever the Bloodline and clones make fun of her and she doesn't provide any form of Lifelink or hexproof.
Maybe i am wrong i would prefer to Reanimate Elesh Norn. Though it looks sweet i must say.
Perhaps if you compare it with Iona,shield of Emeria she seems much much weaker...
Maybe i ll proove wrong or she is perfect for some other format i am not familiar with.. Just would like to see a new baneslayer..