Transmutation
Level: Anarch 1, Anti-Paladin 1, Avenger 1, Cleric 1, Corrupter 1, Despot 1, Dwarf 1, Enforcer 1, Incarnate 1, Metal 1, Paladin 1, Sentinel 1, Sorcerer 1, Wizard 1, War 1
Components: V, S, DF
Casting Time: 1 standard action
Range: Touch
Target: Weapon touched
Duration: 1 minute/level
Saving Throw: Will negates (harmless, object)
Spell Resistance: Yes (harmless, object)
Magic weapon gives a weapon a +1 enhancement bonus on attack and damage rolls. (An enhancement bonus does not stack with a masterwork weapon’s +1 bonus on attack rolls).
You can’t cast this spell on a natural weapon, such as an unarmed strike (instead, see magic fang). A Monk’s unarmed strike is considered a weapon, and thus it can be enhanced by this spell.
Source: Player’s Handbook (Page 251)