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Magic Weapon

School transmutation; Level antipaladin 1, cleric/oracle 1, inquisitor 1, magus 1, paladin 1, sorcerer/wizard 1; Domain war 1

CASTING

Casting Time 1 standard action
Components V, S, DF

EFFECT

Range touch
Target weapon touched
Duration 1 min./level
Saving Throw Will negates (harmless, object); Spell Resistance yes (harmless, object)

By the way...
This spell also affects siege engines and siege engine ammunition.

Source Skull & Shackles Player's Guide