Stone of StormsLevel 12 Rare

The arcane symbols for “thunder” and “lightning” are scribed on opposite faces of this piece of rough obsidian.

Wondrous Item        13,000 gp

Power ✦ Daily (Free Action)

Trigger: You miss an enemy with a lightning or thunder attack power.

Effect: Reroll the attack roll.

Published in Adventurer's Vault 2, page(s) 133.