Rebirth of Iron

You touch a single metal object that has been damaged or destroyed by rust, causing the rust to melt together and lose its ruddy hue, then the metal creaks as it reforms and straightens itself. This spell even works if the object has been partially reduced to powder, such as by the Rusting Grasp spell. The spell requires at least 1/4 of the object to remain, and so works even if part is missing, such as one partially consumed by a Rust Monster. This spell does not restore the magical properties of any magic item or Construct destroyed by rust. A slain or destroyed metallic creature such as an Iron Golem is restored in physical form, but it remains "dead", having lost all magical qualities.
 

Transmutation Level: Wu Jen 3 (metal), Sorcerer 4, Wizard 4, Components: V, S, Casting Time: 1 full round Range: Touch Target: One former metallic item, destroyed by rust Duration: Instantaneous Saving Throw: Fortitude negates (harmless, object) Spell Resistance: Yes (harmless, object)   Flecks of rust melt together and lose their ruddy hue. The metal creaks as it re-forms and straightens itself. You instantly restore a single metal object that has been damaged or destroyed by rust. This works even if the object has been reduced to powder, such as by the rusting grasp spell. Even if the object is partly missing, such as one partially consumed by a rust monster, the spell functions as long as at least 1/4 of the object remains. This spell does not restore the magical properties of any magic item or construct destroyed by rust. A slain or destroyed metallic creature such as an iron golem is restored in physical form, but it remains "dead", having lost all magical qualities.