Living-Cliff Colossus

Trample
Whenever a Mountain or Forest enters the battlefield, you may pay {4}. If you do,
Living-Cliff Colossus gets a +1/+1 counter.
Whenever Living-Cliff Colossus takes damage,
it gets -X/-X, where X is the damage it took.
Create an X/X Elemental creature token and
place it onto the battlefield under your
control.