Wildwood Centaur

Trample.
{3}: return target land you control to its owners hand: add one of any color to your mana pool. If that land is a forest, all creatures you control gain trample until the land that was returned to its owners hand enters the battlefield.
{4}: destroy target nongreen, nonwhite, nonred creature with a base power of 5 or more.
Awaken 3- {4}{g}{g}