Ectoplasmic Enhancement(Book of Vile Darkness)
Level: Sorcerer 6, Wizard 6,
Components: V, S,
Casting Time: 1 full round
Range: Close (25 ft. + 5 ft./2 levels)
Target: One incorporeal undead/level
Duration: 24 hours
Saving Throw: None
Spell Resistance: No
The undead affected by this spell gain a +1 deflection bonus to Armor Class, +1d8 temporary hit points, a +1 enhancement bonus on attack rolls, and a +2 bonus to turn resistance.
Each of these enhancements increases by +1 for every three caster levels.
So a 12th-level caster grants a +5 deflection bonus to AC, an extra 1d8+4 temporary hit points, a +5 enhancement bonus on attack rolls, and a +6 bonus to turn resistance.