Rise of the Rune Lords
Assay Spell Resistance
School divination; Level Clr/Ora 4, Sor/Wiz 4
Casting Time 1 swift action
Duration 1 round / level
Saving Throw none; Spell Resistance no
Finishing the spell, your eyes glow with a pale blue radiance, and you understand how to overcome your foe’s resistance to your magic.
This spell gives you a +10 bonus on caster level checks to overcome the spell resistance of a specific creature. Assay spell resistance is effective against only one specific creature per casting, and you must be able to see the creature when you cast the spell.
Adapted from the Spell Compendium, p. 17