Crow, Deathcaller

+1: Exile up to two creatures from any graveyard and create 2 1/1 Spirit tokens Under your control. You gain 2 life for each Spirit created this way
-1: All Spirits (including tokens) you control gain Shroud and Lifelink
-6: Untap all Spirits and initiate a combat phase that can be in addition to the normal combat phase of your turn