Battle at the Helvault

(As this Saga enters and after your drawe step, add a lore counter. Sacrifice after III.) I - II | For each player, exile up to one target non-Saga, nonland permanent that player controls until Battle at the Helvault leaves the battlefield. III | Create Avacyn, a legendary 8/8 white Angel creature token with flying, vigilance, and indestructible.