Jagged Hills

Jagged Hills enters the battlefield tapped unless
you control a Mountain and pay {r}.
{t}: Add {g} or {r} to your mana pool.
{x}, {t}, Sacrifice Jagged Hills: Add X
mana in any combination of colors to your mana
pool. Create a 1/1 green and red Werewolf
creature token with "{t}, Sacrifice a Mountain:
Return Jagged Hills from your graveyard to
your hand."