Branch Jumper

When Branch Jumper enters the battlefield,
it explores. (Reveal the top card of your
library. Put that card into your hand if it's a
land. Otherwise, put a +1/+1 counter on this
creature, then put the card back on top or into
your graveyard.)
Whenever a land you control leaves the
battlefield, you may put a Forest card from
your hand onto the battlefield.