Initial Card StateKnowledge Pool on the battlefield. Curse of Exhaustion on the battlefield. Notable PrerequisitesCurse of Exhaustion attached to an opponent.
StepsWhenever the opponent with Curse of Exhaustion attached casts a spell from their hand, Knowledge Pool triggers, exiling that spell.
Because Curse of Exhaustion prevents the opponent from casting more than one spell each turn, the opponent cannot cast the spell permitted by Knowledge Pool, or any other spell that turn.
ResultsExile all spells cast from target opponent's handTarget opponent can only cast one spell per turn