Ring of the Shadow Storm (3.5e Equipment)
From D&D Wiki
Ring of the Shadow Storm: The ring has two silver bands and moonstone in the middle, it is cold to the touch. The Ring of the Shadow Storm creates a small burst of lightning, it does one d20 damage to whoever it is pointed to, but does one d6 damage to the wearer every use.
Strong necromancy;CL 1; Feats and spells required for creation; wikilink if you can; Cost 190xp, 1,050gp; Weight: 1lbs lb.; Market Price: 1,000