Earthbreaker Druid

When Earthbreaker Druid enters the battlefield,
it deals damage to any target equal to the number
of land cards in your graveyard.
Stalk - Sacrifice two lands (At the end of each block
step, if there is an unblocked creature attacking you,
you may cast this card for its stalk cost. If you do,
choose an unblocked creature attacking you. This
creature blocks that creature.)