Shadow, Child of Hazoret

+2: Put 2 +1/+1 counters on target creature. Deal 2 damage to any target.
0: You get an emblem with "You may gain 2 life at you upkeep. If you do, this emblem deals 2 damage to any target and you lose 1 life.
-10: Tap all creatures your opponent controls, then deal 10 damage to each tapped creature on the battlefield.