Nissa, Nature's Voice

+1: Untap target land you control and put four +1/+1 counters on it. It becomes a 0/0 Elemental creature that's still a land and gains haste.
-3: Put a +1/+1 counter on each creature you control. Creatures you control gain trample until end of turn.
-7: You get an emblem with "Lands you control have indestructible" and "Elementals you control have vigilance."