The Tale of Tamiyo

(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.