Oren, Avatar Expert

+1: Draw a card for each creature you control with a +1/+1 counter on it.
-3: Creatures you control with +1/+1 counters on them gain indestructible until end of turn.
-7: Put fifteen +1/+1 counters on target creature. Creatures you control with +1/+1 counters on them gain double strike until your next turn