Malfegor, Planar Terror

+2: Malfegor, Planar Terror deals 2 damage to each player.
-3: Destroy target creature or planeswalker. If it is a planeswalker, you gain life equal to it's mana cost.
-10: Malfegor, Planar Terror deals 5 damage to each player. Put X +1/+1 counters on each creature you control, where X is damage dealt this way.