Balthasar Gelt, Patriarch

+2: Until your next turn, white spells you cast cost (1) less to cast.
-2: Until your next turn, Empire creatures you control gain hexproof, vigilance and "Whenever this creature attacks, create a Treasure token".
-12: Choose an opponent. Exile all creatures they control. For each creature exiled this way, they create a 0/2 Gold Statue creature token.