Your rune-enhanced weapon strike marks a foe as the nemesis of you and your allies, making attacks against it more potent.

Daily   ✦     Arcane, Weapon
Standard Action      Melee weapon

Target: One creature

Attack: Intelligence vs. AC

Hit: 2[W] + Intelligence modifier damage.

Effect: Until the end of the encounter, when any of your allies hits the target with a melee attack during his or her turn, the attack deals 2d6 extra damage.

Published in Arcane Power, page(s) 67.