Hammering Volley
Ranger Attack 13
Pulling back on your bow with great effort, you unleash a pair of arrows that slam your foes into the ground.
Ranged weapon
Target: One or two creatures
Attack: Dexterity vs. Fortitude, one attack per target. If you target one creature, you gain a +2 bonus to the damage roll. If you target two creatures, you take a -2 penalty to both attack rolls.
Hit: 2[W] + Dexterity modifier damage, and you knock the target prone.
Hammering Volley is an encounter power available to rangers at the 13th level.[MP:50]