The ambient magic of your unsuccessful attack manifests as countless blades of fire that lash out at nearby enemies.

Encounter   ✦     Arcane, Fire, Implement
Free Action      Close burst 1

Trigger: You used a swordmage at-will attack power this turn and did not hit any target with it

Target: Each enemy in the burst

Attack: Intelligence vs. Reflex

Hit: 2d6 + Intelligence modifier fire damage.

Published in Dragon Magazine 382, page(s) 23.