Kraven, Savage Summoner

{x}{g}:Put a Werewolf or Wolf creature card from your hand onto the battlefield with converted mana cost X.
At the beginning of each upkeep, if no spells
were cast last turn, transform Kraven, Savage Summoner.
When the plane was brought to its knees by Emrakrul, Innistrad found an unlikely ally in the Werewolves.