Joey, Prophecy Denier

At the beginning of your upkeep, take control of
all werewolf creatures on the battlefield. Joey, Prophecy Denier gets +1/+1 for all werewolf creatures on the battlefield.
All werewolves gain haste, double strike, trample,
and toxic.
{7}{t} Destroy all non-werewolf creatures on the battlefield.
They tried to tell him who he would become, so he
wrote his own future in their blood.