The Task of Tenvillah
Tahldar casts web to keep the skeletal army below at bay.
The 11 skeletons summoned by Shae stand around twiddling their thumbs--those who have thumbs, that is.
Kahan finishes his spell, and a field of force shaped like a hammer appears, which he sends at the green glowing orb. It hits the orb. (6 hp dmg.) Kahan remains concentrated and can attack with it again.
But the orb, being unsafe even at a distance, begins approaching you. On the way, it pulses and screeches again. Behind you, more skeletons become animated, and others begin falling from the ceiling onto the floor (and web) around you, moving and getting ready to attack.
Meanwhile, Shae takes the Yttrium from its slot. Nothing happens.
And Borimer flies over to #4 with the false floor and takes the Lapis Lazuli gem out. Nothing happens.
You now have 10 skeletons trying to attack (plus more trying to get out of the wall or falling from the ceiling), countless skeletons below you trapped by webs and moving to the far side to climb up, and a green glowing orb quickly approaching you.
The ledge you are on is quite full of skeletons (21 total=11 from Kahan and 10 from the green orb) as well as having Kahan, Tahldar, Leo, and the newly arrived Shapfren. All in approximately an 8 foot by 40 foot section of ledge.