#pretty....

(for this theory to work, you also have to subscribe to the henry ≠ vecna theory, where vecna is henry's body being used as a vessel by the mind flayer, with the real henry trapped in his own mind.)

hellfire needed a 20 to defeat vecna

erica rolled an eleven - a miss on its own.

011.

lucas shot a buzzer beater wearing the number eight.

008.

and erica finished vecna off with a nat 20 - a critical hit.

but those numbers don't add up. 11+8 is only 19. to get the 20 and defeat vecna, they would need another person: