Myth Realized is a rare Enchantment card from Dragons of Tarkir (DTK), collector number 26. Current market price: $0.28 (foil $0.69), TCGplayer market prices via Scryfall.
Whenever you cast a noncreature spell, put a lore counter on this enchantment. {2}{W}: Put a lore counter on this enchantment. {W}: Until end of turn, this enchantment becomes a Monk Avatar creature in addition to its other types and gains "This creature's power and toughness are each equal to the number of lore counters on it."