Bolts of divine lightning arc from your hands to scorch the area before you. The bolts linger, ready to avenge any attacks made by your foes

At-Will   ✦     Divine, Implement, Lightning
Standard Action      Area burst 1 within 10

Target: Each creature in the burst

Attack: Wisdom vs. Reflex

Hit: 1d6 + Wisdom modifier lightning damage. Whenever the target makes an opportunity attack before the end of your next turn, the target takes lightning damage equal to your Intelligence modifier.
Level 21: 2d6 + Wisdom modifier lightning damage.

Published in Player's Handbook 2, page(s) 103.