The ultra-powerful, jewelled Axe of Firedoom is a weapon that really screams "overkill." Each time this Axe is used, it engulfs everything surrounding the wielder in a sea of flames—a tactic that is as devastating to the wielder as it is to enemies. The only hope of using this weapon without committing literal suicide is to find some means of becoming immune to fire damage.
The Avatar found the Axe of Firedoom in the secret vault of the Scintillus Academy in Ultima Underworld II. However, using it was totally out of the question, until the hero found the Leather Vest of Flameproof within the Tomb of Praecor Loth, left there by the fallen knight Silanus. With this vest, it was no problem to use the axe to great effect against the Avatar's foes.