Critical Edge

Critical Edge
Transmutation [metal, wood]
Level 3 (complex)
Casting Time 1 standard action
Components V, S
Range close (10 ft./level)
Targets one weapon or 50 projectiles, all of which must be together at the time of casting
Duration 10 min./level
Saving Throw Will negates (harmless, object)
Spell Resistance yes (harmless, object)

This spell makes a weapon magically keen, improving its ability to deal telling blows. This transmutation increases the threat range of the weapon by 1. If cast on arrows or crossbow bolts, the critical edge on a particular projectile ends after one use, whether or not the missile strikes its intended target. Treat shuriken as arrows, rather than as thrown weapons, for the purpose of this spell.

OPEN GAME LICENSE Version 1.0a - All text is Open Game Content.