Ulrich, Moon Caller

{2}: You may put a werewolf creature from your
hand onto the battlefield by paying its mana cost.
Activate this ability only once per turn and only
at any time you can cast a sorcery.
At the beginning of each upkeep, if no spells
were cast last turn, transform Ulrich, Moon
Caller.
"With the moon, the Krallenhorde will hunt"
—Ulrich, Krallenhorde Alpha