Nilkro,Hollowghast Slayer

+4: You gain 5 life for all enchantments put down this turn
-2: Sacrifice 2 Creatures. Put 3 -2/-2 counters among 3 creatures or deal 10 damage to target player
-12: Look at target players hand. Choose 3 cards and exile them or give target +4/+4 counters amongst 2 creatures