The illusion runs out, and she is back in her office. "Should I attempt other effects? Stronger ones, perhaps?"

"If you don't mind, though I think I will probably not experiment with letting them through."

"Understandable. Any preferences?"

"...lemme get a song stuck in my head and then you can try reading me, and save mind control for last."

"Very well, I will prepare the materials." He switches spell focus, grabs a few different crystals including a couple of mana ones, and grabs a piece of paper with a spell diagram written on it then places some of the materials onto it in specific places.

She hums to herself tensely and gives the thumbs up when he's ready.

And he casts the spell.

The crystals vanish or turn to dust, and then once again Elisabel feels that same ping.

"...nothing at all," he says, after a second, wonderingly.

"Yeah. ...sorry about your crystals."

"Think nothing of it, this is incredible. You will almost certainly be able to resist anything the dungeon throws at you." He stops the spell. "Should I try the last one?"

"...if you think it's worth it."

"From a material cost perspective? Yes. If you can resist that spell as easily as you did everything else I can think of no psychic effect that could touch you, it is more sophisticated than anything else I have ever encountered. But it would just be a confirmation of what I already think is true."

"Go for it, then. Something - minor."

He nods and switches spell diagrams.

This one is monstrously complicated, and requires lots of crystals as well as some herbs. As he casts, the spell consumes the materials on the diagram one by one in sequence while Philippe moves his focus to be directly above each of them with one hand and draws sigils in the air with the other, and Elisabel can feel the buildup of magic in the air. It feels almost like being near a dungeon does, if more locally concentrated, and is reminiscent of the more advanced spells she's seen in other people's experiments.

She would definitely not be able to cast this one, herself, yet.

And again, ping. No stronger than before.

"Same as ever."

"Incroyable..." For a moment he looks genuinely excited for the first time since he arrived, though he quickly schools his reaction. "Yes, I believe you are the most likely person to be able to entirely resist whatever psychic effects that dungeon has out of anyone I've ever met."

"Great. And you wanted to come along, right? Anyone else you know of who should be in on it?"

"I have a party, they all agreed that this would be important enough for us to try to go again.

"If you do turn out to be immune to everything... I mean to say, do you have plans to attempt to help us clear the entire dungeon? It is above your usual paygrade, but I trust Tristan to be able to keep you safe."

"I think that might depend on what I... see... when I walk into it, you know? But in principle I'm willing."

"It would take two to three days to reach the end of the third level, so you will need to prepare accordingly."

"Yeah. My dad lives by Alice Springs, I'll stop there and gear up."

"Very well. I... believe this is all, then?"

"Unless you wanna talk shop. I don't have your oomph but I'm an academic witch."