What are the abilities of Ballad of the Black Flag?
user
(As this Saga enters and after your draw step, add a lore counter. Sacrifice after IV.)\nI, II, III — Mill three cards. You may put a historic card from among them into your hand. (Artifacts, legendaries, and Sagas are historic.)\nIV — Historic spells you cast this turn cost {2} less to cast.
assistant