At 1st level, the cavern sniper gains the ability to imbue his arrows or bolts with the effect of one of his drow faerie fire, darkness, or deeper darkness spell-like abilities (provided he has access to the ability) as a swift action. When such an arrow or bolt is fired, the spell's area is centered where the arrow or bolt lands. If the target of the attack has a space larger than 5 feet, the cavern sniper can choose which square of the creature's space is the center of the spell-like ability's effect, as long as that square is within line of sight of the cavern sniper. The cavern sniper can instead choose to target a single square within line of sight with an imbued arrow or bolt, and uses that square as the center of the spell-like ability's area of effect on a hit (AC 5). The arrow must be fired during the round it was imbued, or the spell-like ability is wasted. If the arrow or bolt misses, the use of the spell-like ability is wasted. This ability replaces the 1st-level fighter bonus feat.
