Shock Stone (3.5e Equipment)
From D&D Wiki
Shock stone:This is thrown at an opponent as if it is a projectile.It ignores the armor bonus for armor class but the dexterity and misc. bonuses are still incorporated.It shocks the opponent (fortitude save dc 18) for 1d8 combat rounds.During the time they are shocked they are conscious but immobile and cannot attack or move.
3.5e Magic Item name=Shock Stone Aura=Moderate School=Enchantment