Enchant player Enchanted player can't cast more than one spell each turn.
"I do believe your heresy will prove more difficult now that you have more pressing concerns." —Bishop Argust
Official Rulings for Curse of Exhaustion
1/22/2011 : Curse of Exhaustion will look at the entire turn to see if the enchanted player has cast a spell yet that turn, even if Curse of Exhaustion wasn't on the battlefield when that spell was cast.
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