the Thunder Bolt

Object 'thunder bolt thunderbolt spear' is type weapon, material energy.
Extra flags: hum invis magic nodrop.
Weight is 10, value is 2, level is 50.
Weapon type is two-handed spear.
Damage is 10d5 (average 30).
Affects hitroll by 4.
Affects damroll by 3.
Affects parry by 2.
Rare item.