Arthen is getting cranky.
With Calistria's wasp and pomegranate touching the bow string, she draws on the sparklepire. "Calistria most exquisite, grant us the light of passion which is life itself, unmaking all unlife (save Quinley)!" Arthen looses the shot and a burst of sunny streaks radiate in all directions from Arthen's bow... Meanwhile, the actual arrow bounces harmlessly off the ceiling. [Bow channel 22hp (17 vs will for half) vs undead (exepting Quinley).]
[That's a 30' radius and should get, AFAICT, anything undead in the hallway, the vamp next to the demon in the main room, the ghoul to the far left/demon side of the hole and possibly the ghoul next to him if he hasn't jumped down, plus anything invisible on the way out into the main room...]