Lumbering Mountian

Land Creatures you control have Trample
Landfall - Whenever a Land enters the battlefield under your control, target land you control becomes a 4/4 Land Creature until end of turn. It's still a land. If the Land that triggers this ability is a Forest or Mountain, Draw a card.
{t}: Add {r} or {g} to your mana pool.
It races down mountainsides and through forests, awakening it's fellows to race with it as it runs.