Jod's vengance

Whenever a opponents casts a spell, you
may pay {p/b}{p/b}{p/b} and flip a coin. If you win
the flip that spell is countered, if you lose
the flip create a */* Jerk creature token that has
"this creatures power and toughness are equal to
the number of Jerk tokens you control"
Whenever 3 Jerk creature token deals combat
damage to a player, exile up to one target
permanent that player control.