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Blinding Light
Swordmage Attack 13

As your sword connects with your foe, a burst of arcane light roots nearby enemies to the ground.

Melee weapon

Target: One creature

Attack: Intelligence vs. AC

Hit: 2[W] + Intelligence modifier radiant damage. Each enemy adjacent to you other than the target is immobilizied until the end of your next turn.
Aegis of Assault: When you use your aegis of assault to teleport and make an attack, you can use this power in place of the basic melee attack.

Blinding Light is an encounter power available to swordmages at the 13th level.[AP:57]