Harmonic Chorus

(Complete Adventurer, DnD 3.5)

Enchantment (Compulsion) [Mind-Affecting]

Level: ; Bard 3
Components: V, S
Casting Time: 1 standard action
Range: Close (25 ft. + 5 ft./2 levels)
Target: One living creature
Duration: Concentration, up to 1 round/level (D)
Saving Throw: Will negates (harmless)
Spell Resistance: Yes

Harmonic chorus lets you improve the spellcasting ability of another spellcaster.
For the duration of the spell, the subject gains a +2 morale bonus to caster level and a +2 morale bonus on save DCs for all spells she casts.
Focus: A tuning fork.