Waterbending Lesson is a common Sorcery — Lesson card from Avatar: The Last Airbender (TLA), collector number 80. Current market price: $0.20 (foil $0.28), TCGplayer market prices via Scryfall.
Draw three cards. Then discard a card unless you waterbend {2}. (While paying a waterbend cost, you can tap your artifacts and creatures to help. Each one pays for {1}.)