Unseen Gauntlet
Swordmage Attack 3
Your words of magic create a gauntleted hand that wraps around your foe, crushing its windpipe and leave it gasping for breath.
Ranged 5
Target: One creature
Attack: Intelligence vs. Fortitude
Hit: 1d10 + Intelligence modifier force damage, and the target is immobilized until the end of your next turn.
Aegis of Ensnarement: The attack deals extra damage equal to your Constitution modifier.
Unseen Gauntlet is an encounter power available to swordmages at 3rd level.[AP:54]