High Archmage Dominicus II

Flying, haste.

Nova's Herald: {t} Draw 2 cards and sacrifice a creature you control. You gain {c} equal to their mana cost and lose life equal to their power and toughness combined. If you cast a creature spell this way, sacrifice Dominicus. If Dominicus was in the command zone as you cast this spell, you may cast him from the command zone without paying his commander tax.