Ulrich of the Krallenhorde

Eminence --- At the beginning of each
combat, if Ulrich of the Krallenhorde is in
the command zone or on the battlefield, you
may pay {r/g}. If you do, transform all Human Werewolves you control.
At the beginning of each upkeep, if no spells were cast last turn, transform Ulrich of the Krallenhorde.