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Warlord's favor
warlord attack 1

Target: one creature

Attack: Strength vs. AC

Hit: "2[W] + Strength modifier damage. One ally within 5 squares of you gains a +2 power bonus to attack rolls against the target until the end of your next turn.
Tactical Presence: "The bonus equals 1 + your Intelligence modifier."[PH:145][Dr397:17]

Warlord's favor is an encounter power available to warlords at 1st level.