Everhaven Entrancer

When Everhaven Entrancer blocks a creature, that creature's controller puts the
top three cards of his or her library into his
or her graveyard.
Stalk {1}{u} (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.)