Ancient Treefolk

Reach, Vigilance
Ancient Treefolk's Power and Toughness is equal
to the number of Forests you control.
At the beginning of your precombat phase, other creatures you control get +2/+2 and Vigilance.
{3}{g}: Target land you control becomes a 4/4 elemental creature with Trample and Haste until
end of turn. It is still a land. Untap it.