The Coming of Galactus

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after IV.) [I] Destroy up to one target nonland permanent. [II] [III] Each opponent loses 2 life. [IV] Create Galactus, a legendary 16/16 black Elder Alien creature token with flying, trample, and "Whenever Galactus attacks, destroy target land."