Wizard Attack 7Concussive Echo

A focused blast of thunder slams into your foe, and the energy of the blast is stored in your enemy’s body. When it next attacks, that energy is released in a concussive burst.

Encounter        Arcane, Charm, Evocation, Implement, Thunder
Standard Action      Ranged 10

Target: One creature

Attack: Intelligence vs. Will

Hit: 2d6 + Intelligence modifier thunder damage. The first time the target makes an attack roll before the end of your next turn, it deals 5 thunder damage to itself and to each enemy within 3 squares of it.

Update (10/18/2011)
Updated in Wizard Schools article.

Published in Arcane Power, page(s) 106.