Teo, Spirited Glider is a uncommon Legendary Creature — Human Pilot Ally card from Avatar: The Last Airbender (TLA), collector number 74. Current market price: $0.14 (foil $0.25), TCGplayer market prices via Scryfall.
Flying Whenever one or more creatures you control with flying attack, draw a card, then discard a card. When you discard a nonland card this way, put a +1/+1 counter on target creature you control.