Mountaintop Wilds

Mountaintop Wilds enters the battlefield tapped.
({t}: Add {r} or {g})
{2}{r/g}, {t}: Until end of turn, target creature you
contol gets +1/+0 and haste if it's red and +0/+1
and trample if it's green.
When the fog is thick only instincts can tell you where
the earth ends and the treetops begin.