Avacyn, the Purifier

Legendary Creature - Angel

(Color indicator: Avacyn, the Purifier is red)

Flying
When 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

6/5

Card has other part: Archangel Avacyn

2016-04-08 Archangel Avacyn's delayed triggered ability triggers at the beginning of the next upkeep regardless of whose turn it is.
2016-04-08 Archangel Avacyn's delayed triggered ability won't cause it to transform back into Archangel Avacyn if it has already transformed into Avacyn, the Purifier, perhaps because several creatures died in one turn.
2016-07-13 For more information on double-faced cards, see the Shadows over Innistrad mechanics article (http://magic.wizards.com/en/articles/archive/feature/shadows-over-innistrad-mechanics).

Card is in preconstructed decks:

mtg.wtf