Immunity to slashing is funny. So a tiny rapier or arrows can destroy it, while a great sword doesn't even scar it.[/ooc]
Good point- so we'll count any weapon actually meant to be able to thrust as counting as piercing for this purpose- or if it has at least 8 lb weight, can count as bludgeoning. So the scimitar will not work, but the rapier will work. Normally, most weapons aren't supposed to have much effect on stone, but... loose ruling. The magic on our weapons should reinforce them enough to allow them to do the job. These are rapiers, not fencing foils. On that point, some things... say, unarmed attack or a sap... will not work against the stone. Right you are about the caster level, I had a misunderstanding about the relation between the spell level and caster level regarding this spell.
It was a brief fall- only immediate actions could be taken, and the immovable rod would have been smashed by the ceiling as it would take the same damage.
Fair question about clinging to the wall. How about a DC 35 climb check to take 33 damage as though a flyer?
Belsiard immediately begins healing everyone. Molten bubbling is heard, and at a snail's pace, the cracks in the floor fill with lava only a moment before it solidifies. The floor warms quickly. You hear voices in the cavern- spellcasting. You have limited visibility through the opening, and do not see the source.
Everyone will need the ability to climb, fly, or hold on to someone who can. Or teleport, etc.