Armin, Beasts' Friend

+1: Each creature you control gets +1/+1 until end of turn. Draw a card for each creature of power 4 or greater.
-2: Target creature you control gets +X/+Y and trample, where X is its power and Y is its toughness.
-7: You gain an emblem that says "Each creature you control gains Annihilator 1 and trample".