"Hmm... About the people who don't wake up, what are they like?"

"...like they're not there? They just kind of - drool."

"I see. Okay, that's enough preliminary questions, I have a few experiments in mind. But it might take a few hours, we could start now and resume it later if it gets too late?"

"Sounds good."

"Okay!—oh, forgot to ask one question, do you need to be looking at the place you're going to conjure stuff in, can you do it remotely through a camera or glass...?"

"I haven't tried a camera, glass works fine."

"Hmm... then let's try with a camera as another preliminary test." He turns a monitor to Epic and shows a video feed from a room not too different from the one in the PHQ where they ran master/stranger tests. "Make something in there?"

He doesn't. 

(He totally could, though.)

"Pity," he sighs. "Well. We'll go to that room, then, and I'll record things and ask for a bunch of things and we'll try the more dangerous experiments later, okay?"

"Okay!"

So he leads Epic to that room, a few doors down the hall, and sets the camera so it's recording. "Later on I'm gonna perform an MRI on you while you use your power, 'kay?"

"Okay!"

He looks into the camera and says, "Power testing log. March twenty-eighth nineteen ninety four, seven thirteen PM. Subject: Epic. Alleged power: conjuration of arbitrary matter, including unconjuration of matter generated by him or, when not, for purposes of new conjuration. Batch number one: exploration. Say hi to future me, Epic."

"Hi!!!"

He beams.

"Alright, so first thing I'm going to ask you to make a bunch of different things to see how much you can make, and what, and also this is a very good camera so I'm going to measure times and such, alright?"

"Okay."

So he gives Epic a list of objects of varying sizes and materials to conjure, one by one, all of them mundane things like a marble or a chair or a plant or a phone or...

He makes all of them. He hesitates a bit longer than needed so that if it gets to things where he has to be creative there won't be a noticeable delay.

Not for this phase. And they now have a roomful of random objects.

"Can you make them all go away?"

Pause.

Teleport.

"Can you remake all of it at once?"

"Uh, I think so -" - that'd be hard without an eidetic memory but he has one - 

There they are.

"Can you unmake exactly the objects smaller than this," and he squeezes the air with his hand so they're about a foot apart.

Takes a second but -"yep"-

"And how about all objects with volume greater than one cubic meter?"