Bard Attack 3Cunning Ferocity
The mark of your weapon on your target’s hide gives strength to your allies’ attacks against the same foe.
Encounter Arcane, Weapon
Standard Action Melee weapon
Target: One creature
Attack: Charisma vs. Reflex
Hit: 1[W] + Charisma modifier damage, and each ally within 5 squares of you gains a +2 bonus to damage rolls against the target until the end of your next turn.
Virtue of Cunning: The bonus to damage rolls equals 1 + your Intelligence modifier.
Published in Player's Handbook 2, page(s) 70.