Grace Ring of Lightning
The gold and silver weave of this ring is cut with sparkling channels. Lightning arcs from it to protect you when you're incapacitated.
Ring Slot 21,000 gp
You gain a +1 item bonus to saving throws against dazing or stunning effects.
Power Encounter (No Action)
Trigger: You are conscious and end your turn without having made an attack during it.
Effect: One creature within 5 squares of you takes lightning damage equal to your highest ability modifier.
Published in Adventurer's Vault 2, page(s) 70.