Elven Lord Mummy has buggy AI

[Garn]

the hostile NPC, Elven Lord Mummy, found in Tomb of Morsatai beneath Hallowtop, has buggy AI
after it runs out of spells, or at least decides to stop casting spells, it will not attack you with its mace, nor with any other weapon

on a related note, the Ghost in Hallowtop: Shrine of Heroes, is crittable