As you strike your foe, you call on storm spirits to surround it in a cage of lightning.

Encounter   ✦     Lightning, Primal, Weapon
Standard Action      Melee weapon

Target: One creature

Attack: Strength vs. AC

Hit: 4[W] + Strength modifier damage, and the target takes 15 lightning damage if it moves before the end of your next turn.

  Wildblood: The lightning damage equals 15 + your Wisdom modifier.

Published in Player's Handbook 2, page(s) 164.