Blackwater Academy: Applied Mischief

Applied Mischief is the prankster's booster: filch a card, redirect a spell, swap what your opponent was counting on for something far worse. Tricks, swaps, and clever chaos - the fourth and final Academy set, and the one your friends will accuse you of cheating with.

That completes Blackwater Academy: four sets, one school. Next stop, the wilds beyond the wall.