Waterbender's Restoration is a rare Instant — Lesson card from Avatar: The Last Airbender Eternal (TLE), collector number 99. Current market price: $4.09 (foil $4.47), TCGplayer market prices via Scryfall.
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.