The Death of Gwen Stacy (Marvel's Spider-Man)

Enchantment Ñ Saga - (As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I Ñ Destroy target creature.
II Ñ Each player may discard a card. Each player who doesn't loses 3 life.
III Ñ Exile any number of target players' graveyards.