The drow scowled, and then he tossed the flask of oil with good effect, splashing the wall and possibly her feet, if she wasn't incredibly quick. If she succeeded, she'd get to the surface. If she failed, though, she'd get dropped again, and have a very difficult time climbing with her feet drenched in oil.<br/><br/>((19-3=16 to hit the space, DC 20 Reflex save or be drenched in oil.))