Amphitheater of Anguish

{t}: Add {w} or {b} to your mana pool.
Amphitheater of Anguish enters tapped unless
you've spent mana on a spell or ability this
turn.
{w/b}, {t}, Exert Amphitheater of Anguish:
Whenever a creature dies this turn, create a Treasure token. This ability only triggers as
many times as there are players in the
game per turn.