Byrnaal's Astounding Negation
(Alteration, Necromancy)

Range:  10 yards per level
Components:  V, S
Duration:  1 round per level
Casting Time:  7
Area of Effect:  One creature
Saving Throw:  1/2

This spell reduces the magic resistance of any creature by 2d10% + 1% per level. A successful saving throw reduces this loss to half (round up), but the creature's magic resistance has no effect on this spell.
The somatic component consists of merely pointing at the target. The verbal component is this: the caster must utter three truths about the target. Depending on how well this is roleplayed, the DM should give saving throw bonuses or penalties, or change the amount by which the magic resistance is lowered.
Note: This spell was made three years before the Tome of Magic containing the 5th-level lower resistance spell came out, so seniority is claimed by the original poster.

