Instant of Power

(The Forge of War, page 114, DnD 3.5)

Transmutation

Level: ; Bard 1; Druid 1; Ranger 1
Components: V, S
Casting Time: 1 immediate action
Range: Close (25 ft. + 5 ft./2 levels)
Target: One creature
Duration: 1 round
Saving Throw: Will negates (harmless)
Spell Resistance: Yes (harmless)

You bestow a brief moment of power on your ally, granting a +4 enhancement bonus on his next attack roll, saving throw, or damage roll.