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Wolf Howl Strike
Ranger Attack 23

You dart into sight and strike your foe as you howl.

Melee or Ranged

Target: One creature

Attack: Strength (melee) or Dexterity (ranged) vs. AC. If the target couldnt see you before you moved, it grants combat advantage to you for this attack.
Effect: Before the attack, you move your speed.

Hit: 3[W] + Strength (melee) or Dexterity (ranged) modifier damage.

Wolf Howl Strike is an encounter power available to rangers at the 23rd level.[MP2:43]