Answer with Steel
Ranger Attack 13
You instantly attack when an enemy comes too close. you then quickly step away.
Melee weapon
Trigger: An enemy moves during its turn to a square adjacent to you
Target: The triggering enemy
Attack: Dexterity vs. AC
Hit: 2[W] + Dexterity modifier damage, and you shift 1 square.
Answer with Steel is an encounter power available to rangers at the 13th level.[MP2:39]