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Mark of the Hound
Swordmage Attack 5

With a wicked flourish, you carve your mark into the flesh of your foe, enabling you to find the creature wherever it goes.

Melee weapon

Target: One creature

Attack: Intelligence vs. AC

Hit: 2[W] + Intelligence modifier damage

Miss: Half damage

Effect: Until the end of the encounter, you can automatically pinpoint the location of the target while it is within 20 squares of you, even if line of sight or line of effect would normally be blocked. You still take any penalties for any concealment or cover that the creature has against you. Also, until the end of the encounter, you gain the benefit of flanking against the target while you and at least one ally are adjacent to the target.

Mark of the Hound is a daily power available to swordmages at 5th level.[AP:55]