Isolating Aegis
Swordmage Attack 9
Your aegis's magic robs your foe of allies.
Ranged 10
Target: One creature marked by your Swordmage Aegis power
Attack: Intelligence vs. Will
Hit: 2d6 + Intelligence modifier force damage, and the target is not considered an ally to its allies and vice versa for the purpose of powers and auras. This effect lasts until the end of the encounter or until the target is no longer marked by your Swordmage Aegis power.
Aegis of Ensnarement: If the target starts its turn adjacent to a creature other than you and is within 10 squares of you, you can use the immediate reaction of your aegis of ensnarement on the target.
Isolating Aegis is a daily power available to swordmages at 9th level.[Dr405:39]