Set:	Avatar: The Last Airbender: Eternal-Legal
Type:	Instant Lesson
Rarity:	Rare
Cost:	{U}{U}

As an additional cost to cast this spell, waterbend {X}. (While paying a waterbend cost, you can tap your artifacts and creatures to help. Each one pays for {1}.)
Exile X target creatures you control. Return those cards to the battlefield under their owner's control at the beginning of the next end step.