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Weave through the Fray
Ranger Utility 6

You dodge through the thick of the fight, denying your foes a chance to pin you down in one spot.

Trigger: An enemy moves adjacent to you

Effect: You can shift a number of squares equal to your Wisdom modifier.

Weave through the Fray is an encounter power available to rangers at the 6th level.[PH:108]

Character optimization[]

This is considered a good choice as a defensive pick, as proper use of the power can either force the enemy to charge or not attack at all - where the right positioning can put you just outside the target's reach.