Green, the Wild

At the beginning of each upkeep, you may
remove a charge counter from Green. If you
don't, put a charge counter on Green. If you do,
choose one:
-Target creature gains trample until end of turn.
-Target creature gets +3/+3 until end of turn.
-Destroy target artifact or enchantment.
He is strength. He is solidity. He is stubbornness.