Rusted Blade

Complete Mage (CM)Updated Supplementals (3.5)

Rusted Blade is a D&D 3.5 spell (Transmutation) from CM. On class lists for Horde Assassin (Level 3), Druid (Level 3), Druid Variant (Level 3), and others. Range or area: Touch; Saving throw: Will negates (object, harmless) and Fortitude negates; Duration: 1 round/level (D); Casting time: 1 standard action.

School
Transmutation
Casting Time
1 standard action
Components
V, S
Range
Touch
Target
One weapon
Duration
1 round/level (D)
Saving Throw
Will negates (object, harmless) and Fortitude negates
Spell Resistance
Yes (object, harmless)

Your touch corrupts the substance beneath your fingers. Where once it gleamed, it now grows dull and pitted.

You cause a rustlike patina to temporarily cover the target weapon. (Despite its name, the spell can affect any kind of weapon regardless of material). For the duration of the spell, any living creature damaged by the weapon must succeed on a Fortitude save or contract filth fever (DMG 292). Use the spell’s normal save DC for the initial saving throw, but use filth fever’s normal DC 12 for later saves. Multiple applications of the disease do not stack, but even a creature that succeeds on one or more saves must continue to save each time it takes damage from the weapon.

Despite the change in appearance, this spell has no ill effect on the target weapon.