Grok-Grok, Seaside Scammer

Creatures your opponents control have Haste.
Whenever a creature an opponent controls
attacks you, you may pay {r}. if you do, remove
that creature from combat and create a tapped Treasure token.
{2}{u}{r}, {t}: Gain control of target untapped
creature that didn't attack on it's controller's
turn. Activate this ability only when you could
cast a sorcery.