Invisibility will cause the target creature and any gear it is carrying to vanish from normal and infrared sight. The subject will be hidden from enemies and allies alike. Any object dropped by an invisible creature will instantly become visible, while picking up an object has the opposite result. The effect of the spell will last 24 hours, unless it is dispelled or creature performs offensive action.
Grants a +4 to-hit bonus when attacking with a melee attack from invisibility and (if attacking from behind with a thief melee weapon) causes thieves to receive their backstab damage multiplier.