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Blazing pursuit
Swordmage Attack 1

You envelop your blade in fire and then strike. The flames create a lingering path that you can travel along to catch your escaping foe.

Target: One creature

Hit: 1[W] + Intelligence modifier fire damage. If the target is within 5 squares of you at the end of its next turn, as a free action you can teleport to a space that must be adjacent to the target.

Effect: Aegis of Assault: you can teleport to a space adjacent to the target even if you do not have line of sight to that space

Blazing pursuit is an encounter power available to Swordmages at 1st level.[AP:51]