Ranger Attack 17Arrow of Vengeance
You point your bow at the villain who just wounded your friend and loose a vengeful arrow.
Encounter Martial, Weapon
Immediate Reaction Ranged weapon
Trigger: A creature within range attacks your ally
Target: The attacking creature
Attack: Dexterity vs. AC, and you gain a power bonus to this attack equal to your Wisdom modifier.
Hit: 2[W] + Dexterity modifier damage.
Published in Player's Handbook, page(s) 110.