The Tale of Tamiyo is a rare Legendary Enchantment — Saga card from Duskmourn: House of Horror Promos (PDSK), collector number 75s. Current market price: — (foil $0.50), TCGplayer market prices via Scryfall.
(As this Saga enters and after your draw step, add a lore counter. Sacrifice after IV.) I, II, III — Mill two cards. If two cards that share a card type were milled this way, draw a card and repeat this process. IV — Exile any number of target instant, sorcery, and/or Tamiyo planeswalker cards from your graveyard. Copy them. You may cast any number of the copies.