Clockwork Arbiters

Whenever an opponent casts a spell on another
player's turn or draws their second card on a turn
put a +1/+1 counter on Clockwork Arbiters.
{x}, Remove X +1/+1 Counters from Clockwork Arbiters: Exile target spell with converted mana
cost X.
Without Copperface's factory-made enforcers, the
Arbiter's League would never have the manpower to
keep Belgazzio in check.