Kraven, Undead Wolf-King

Haste, Trample
when Kraven, Undead Wolf-King attacks, you
may return a werewolf creature card from your
graveyard to the battlefield, Transformed tapped
and attacking, with a pack counter on it.
creatures you control with a pack counter on
them can't transform. If a creature with a pack
counter on it would die, exile it instead.