The Vault of Larin Karr
Capizzio's magic missiles streak towards the Bearded Devil, but fade to a shower of sparks as they near their target, and wholly vanish as they make contact with it.
The save DC for Kerlan's web, I'm showing to be Ref 18. The Babau Demon saved with a 19, the Bearded Devil saved with a 21, but the Drow Wizard, Larin Karr, only managed a 14 (natural one), so he is held fast for the moment.
As Tylara casts her summoning spell, a smallish globe of pale, pinkish light about a foot across begins to form near her, and will fully form as the round ends.
The Babau Demon gives a casual gesture toward the webs holding the Drow Wizard, and the webs flicker quickly several times and then vanish. The Bearded Devil charges Capizzio with its wicked looking glaive, scoring a 21 and a 14 on two attacks, so one hit for 20 hp of damage. The wound from the Devil's glaive will also cause 2 hp/round of bleed damage in future rounds unless the bleeding is stanched. Larin Karr, newly freed from his prison of webs by his demonic ally, activates his wand of lightning bolts and sends a jagged bolt searing through the still dungeon air at Kerlan and Tylara, (save DC 16, take 28 or 14 hp damage).