Wan Shi Tong, Librarian is a mythic Legendary Creature — Bird Spirit card from Avatar: The Last Airbender (TLA), collector number 320. Current market price: $51.81 (foil $80.91), TCGplayer market prices via Scryfall.
Flash Flying, vigilance When Wan Shi Tong enters, put X +1/+1 counters on him. Then draw half X cards, rounded down. Whenever an opponent searches their library, put a +1/+1 counter on Wan Shi Tong and draw a card.