Suppressing Strike
Ranger Attack 17
You shower enemies with arrows, pinning them down. Any foes that try to move through the area you threaten will suffer the consequences.
Area burst 1 within 20 squares
Target: Each enemy in burst
Attack: Dexterity vs. AC
Hit: 2[W] + Dexterity modifier damage, and the target is immobilized until the end of your next turn.
Effect: Until the end of your next turn, you can make a ranged basic attack as an opportunity action against any enemy that moves into the area of the burst during its turn.
Suppressing Strike is an encounter power available to rangers at the 17th level.[MP2:41]