Nick, Walker of Planes

+6: At the beginning of target opponent's next Main Phase they gain 3 life, add 2 mana in any combination of colors, and draw 1 card.
-2: Return target card from your graveyard to your hand.
-X: You may put X +1/+1 counters on target creature, deal X damage to any target, and create an X/X green Elemental creature token.