Shadow Arrow

Shadow Arrow
Spell Information
Spell level :	Innate level: 4, Ranger: 4, Other: Assassin 4
School :	Transmutation
Components :	Verbal
Range :	Long
Target/Area :	1 Hostile Target
Duration :	Instantaneous
Save :	Fortitude Partial
Spell resistance :	Yes

This spell is cast upon a masterwork arrow or bolt, transforming it into pure black shadow. A shadow arrow deals 1d4 points of Strength (G,A) damage. The arrow or bolt must be fired during the same round the spell is cast, or the magic dissipates and is lost. The projectile is destroyed even if it misses its target. 

Gameplay Notes

Although it isn't mentioned in the description the strength damage always applies when the target's spell resistance is overcome. The duration depends on the result of the target's fortitude saving throw. Strength is decreased by 1d4 for an entire minute if the save fails, for three rounds if the save succeeded, and it is not affected if the target was immune. The savingthrow is fortitude vs spells.