Inaccurate?

Fleeting Fortune

(Champions of Valor)

Transmutation
Level: Initiate of tymora 1,
Components: V, S, DF,
Casting Time: 1 immediate action
Range: Close (25 ft. + 5 ft./2 levels)
Target: One creature
Duration: 1 round or until discharged
Saving Throw: Yes (harmless)
Spell Resistance: Yes (harmless)

You imbue the subject with a bit of Tymora's luck, granting her a +5 luck bonus on a single skill check of her choice.
Activating the luck bonus requires no action but must be declared before the skill check is rolled.