Nightmare On Moon Bridge

When Nightmare On Moon Bridge enters the battlefield, if you cast it, create X 3/2 Wolf
creature tokens with Fear, where X is the
number of wolf cards in your graveyard. If you
created 10 or more Wolf creature tokens this
turn, create a 10/10 werewolf creature token
with haste, shroud, and trample.
Run, hide, scurry. You're only giving yourself a
headstart. Literally.