Fable of Wolf and Owl is a rare Enchantment card from Eventide (EVE), collector number 150. Current market price: $7.04 (foil $16.51), TCGplayer market prices via Scryfall.
Whenever you cast a green spell, you may create a 2/2 green Wolf creature token. Whenever you cast a blue spell, you may create a 1/1 blue Bird creature token with flying.