You hurl a concussive blast, causing everything in the area to smoke, smolder, and then burst into flame.

At-Will   ✦     Arcane, Elemental, Fire, Implement, Zone
Standard Action      Area burst 1 within 10 squares

Target: Each creature in the burst

Attack: Charisma vs. Fortitude

Hit: 1d10 + Charisma modifier damage.
    Level 21: 2d10 + Charisma modifier damage.

Effect: The burst creates a zone that lasts until the start of your next turn. Any creature that enters the zone or ends its turn there takes fire damage equal to your Constitution modifier. A creature can take this damage only once per turn.

Published in Heroes of the Elemental Chaos, page(s) 91.