...yeah okay he's pretty sure he's going back in time now. He rummages in his backpack and grabs a pencil and tries throwing it out.

He doesn't have a very clear shot—what used to be a ring of widely spaced rocks and then stalagmites are by now a thicket of spikes gnashing together—but after a couple tries it makes it through. It vanishes once it passes the edge.

Okay, he'll try... pushing the thicket of spikes. Just, using raw strength, see how sturdy it is.

They're stalagmites, so it seems to be exactly rock solid.

He kicks them.

It stays rock solid. That might not have been the best idea.

Ow. But whatever, okay, magic, he can do magic, he can use Bob and make himself stronger, maybe? Or, or can he make his fist made of stone?

The glamour doesn't help much with strength, but giving his fist stonelike properties works perfectly. Doesn't even restrict his movement.

Okay.

Punch.

The two sets of rock grind into each other. This really should be hurting the non-stone part of wrist something awful, but the glamour apparently took care of that too. There's no visible damage to either his hand or the spike.

The cavern rumbles. May not have made progress, but he did get a reaction.

Punch. For the nth time he argues with himself that he made his body an implement it has to serve some function other than being slightly more agile and being screwed over with the Sight.

He is literally punching a wall. After a few strikes pieces start getting chipped off. It's not making a human-sized hole, but it's progress.

And the spikes are still growing upward, or he's sinking down depending on point of view, so the progress inches out of view. (The thicket is also getting thicker. There's progressively less light coming in from the outside.) The area rumbles again, sounding almost like a very low laugh.

Ugh no. "Stay still!" Bob may be best at glamour but that's not the only thing it can do, it's a thing of power. Improvise, improvise—" I will not sink," he declares, inserting his left hand into the jar of blood before closing it and putting it back into his backpack, which he slings again over his shoulder. He grabs the wall with the bloodied hand and says, "My body is my tool, my word is my will. I will stay right the fuck here, for my hand will hold me." And with that he pushes with the bloodied hand, trying to make it stick there, serving as a magical handhold so he will at least not sink.

A power source is a lot less useful without something to power with it. It may or may not be a coincidence that two of the stalagmites cross right there (despite both still being perfectly vertical). There's a handhold and he's successfully dangling.

He's not questioning it.

Punch punch punch punch punch does the Sight say anything useful are there weak spots—

It looks pretty much the same with the Sight as without it. Some pieces are thicker than others, but breaking out by hand is pretty ineffective even with having better hands than most.

He manages to break a spike, and a low roar bells up from no discernible source underneath him.

Okay, he's using his left hand to stay up, he can reach inside his backpack—which he left open—and get the bloodied Swiss army knife, and switch to the saw. "This saw could be much larger and sharper," he says, getting some blood there (ugh doing this one-handed is a chore and a half) and shaking it, like he's trying to get the tool to extend like that.

He's running through Bob faster than ever before. It works. The saw grows and sharpens, and hardens while it's at it. It's marginally less ineffective than breaking rocks by hand.

Now would be a great time for some Deus Ex Machina to appear but if none does he'll just keep sawing.

The whatever it is that's doing the objecting objects. It's slow even by sawing-through-rock standards; he gets another two stalagmites before it moves. The wall, including his handhold, jerks upward. He's briefly near the top of the geometrically questionable dome, with the spikes above him gnashing and grinding together, then it returns back down just as suddenly. And repeats. It's hard to hang on.

Aaaah okay he'll try to hand on with both hands now can he do that.

At the cost of not sawing any more, yes. It's not inclined to stop as long as he's attached.

Ugh. Can he use the saw to hold on?

Not while using it, and it doesn't hold on nearly as well as he does—

At least when he crashes to the ground it was from relatively low down. Once he's down the cave goes still again. He lands by the body of the goblin.

Stupid goblin.

...can he do anything with the goblin. The goblin had a club.