'Khyer-Dirohm', the Vorpal Sword of Atonement

Object 'vorpal sword' is type weapon, material steel.
Extra flags: antigood noremove.
Weight is 33, value is 2, level is 54.
Weapon type is sword.
Damage is 8d6 (average 28).
Affects sword by 5.
Affects damroll by 6.
Affects hitroll by 3.
Unique item.