Nissa, Cursed Aether

: If a creature you control would die, you gain 3 life and put a +1/+1 counter on target creature.
0: Destroy target creature you control with converted mana cost 3 or less. If that creature had 1 or more power, put a loyalty counter on Nissa.
-4: Destroy up to 2 target creatures. They can't be regenerated. Then draw 2 cards.