Shock Fist (4e Power)

Shock Fist	Warmage Attack 17
You conjure a giant floating fist made of sparking lightning that envelops foes and shocks them relentlessly.
Encounter  Arcane, Conjuration, Implement, Lightning
Standard Action	Ranged 20
Special: You conjure a 5-foot-tall fist of electricity in an unoccupied square within range, and the hand attacks. As a move action, you can move the hand up to 6 squares.
Target: Each creature adjacent to the fist
Attack: Intelligence Vs. Reflex
Hit: 4d6+Intelligence modifier lightning damage, and the fist immobilizes the target (save ends).
Sustain Minor: A target immobilized by the fist takes 2d6 + Intelligence modifier lightning damage when you sustain this power. As a standard action, you can attack another target with the fist.