Avatar Destiny is a rare Enchantment — Aura card from Avatar: The Last Airbender Promos (PTLA), collector number 165s. Current market price: — (foil $4.61), TCGplayer market prices via Scryfall.
Enchant creature you control Enchanted creature gets +1/+1 for each creature card in your graveyard and is an Avatar in addition to its other types. When enchanted creature dies, mill cards equal to its power. Return this card to its owner's hand and up to one creature card milled this way to the battlefield under your control.