Natural Superiority

When you cast this spell, you may remove a
counter from target creature you control. If you
do, put a trample counter on that creature.
Target creature gets +3/+3 until end of turn.
Rebound (If you cast this spell from your hand, exile
it as it resolves. At the beginning of your next upkeep,
you may cast this card from exile without paying its
mana cost.)