"'scale model of Melkor's summoner and surroundings' gets you a lot of rock. And the guy, who looks like daeva from my universe - they're less Eldalike than daeva from yours..."

"A lot of rock? Well, daeva in my universe have been around about as long as there've been humans, which are our only sapient species..."

"There was something before the Eldar. They went extinct."

"Fifteen members short, technically, it looks like."

"Yep."

"At any point you summon something from here and get the opportunity to ask it questions, check if this world has Limbo?"

"Sure. Want me to do that now?"

"Seems as good a time as any."

He has the projector do almost the entire circle, so he can't make a mistake, and then finishes it. No messing around with gravity this time.

And here is a daeva. A foot taller even then Tyelcormo, vaguely reptilian, balanced on hind legs and a thick tail like a kangaroo. He nods at it but doesn't comment, nothing that could count as an accidental agreement. 

"I'm a daeva from another universe. This one has an afterlife for non-summoners, right?"

"For our race. Theirs is bound to this world, and fundamentally of it, and cannot leave it."

"...What does that mean?"

"There are none of them in Heaven or in Limbo."

"...Or Fairyland or Hell?"

The daeva shrugs. "One assumes."

"You don't correspond with them enough to know?"

"Not personally, no."

"But you're confident none could have turned up in Heaven or Limbo?"

"...could be really far away, I suppose?"

"Okay. Thanks." pause. "I'm sorry about your mortal versions going extinct."

"I was never mortal."

"It's still sad," she shrugs, "and there isn't an ex-summoner here to offer my condolences."

"Well, they're all better off now, if you think about it."

"Well, the ex-summoners, sure, not so much the ones who ended up in Limbo."

"It's a constant population and we send them things."