Jester of the Punchline

{u}{b}{r}: Exile target spell a player casts that
targets an opponent or a permanent they
control. You may only activate this ability
on your opponent's turn.
{u}{u}{u}{t}: You may cast an exiled spell with
this card without paying its mana cost.
"It's no fun without a punch at the end of the punch
line.What were you saying again? Hoo, hee, ha, ha,
he, hoo, ha!"