Avatar: The Last Airbender Eternal-Legal (!TLE) 

Instant - Lesson 

 

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. 

Phima