You drive your weapon into an enemy and then channel a spell through it, causing it to ring like a tuning fork and draw the attention of others.

Encounter   ✦     Arcane, Thunder
No Action      Special

Trigger: You hit an enemy with a basic attack using a weapon.

Effect: The enemy you hit takes 5 thunder damage. Until the end of your next turn, that enemy grants combat advantage and cannot benefit from partial concealment.

Published in Heroes of the Feywild, page(s) 60.