the Dagger of Yog-Sothoth

Object 'dagger Yog-Sothoth' is type weapon, material steel.
Extra flags: glow magic antigood noremove.
Weight is 3, value is 2, level is 50.
Weapon type is dagger.
Damage is 4d12 (average 26).
Affects managain by 5.
Affects hitroll by 2.
Affects mana by 40.
Affects dispel magic by 5.
Rare item.