(As this Saga enters and after your draw step, add a lore counter. Sacrifice after IV.) I, II, III, IV — Create a Treasure token. Then if you control four or more Treasures, sacrifice this Saga. If you do, create a 6/6 red Dragon creature token with flying. (A Treasure token is an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Legality