Tale of Katara and Toph is a rare Enchantment card from Avatar: The Last Airbender Eternal (TLE), collector number 207. Current market price: $5.09 (foil $4.79), TCGplayer market prices via Scryfall.
Creatures you control have "Whenever this creature becomes tapped for the first time during each of your turns, put a +1/+1 counter on it."