There is a space at the bottom of the world, where Earth and Ice and Shadow meet. It is cold, but not cold enough to kill; dark, but not too dark to see. A small round room, made of chilly black marble, lit by a dim and sourceless glow, with a spiral stair climbing the curve of the wall and a shallow circular recession in the exact center of the floor. The recession is maybe six feet wide by six inches deep, lined with something resembling pale frosted glass, and there is nothing in it.
"That's the plan!" And up they go.
"Do you want like, a briefing on the situation as it may differ from previous situations?" Cor asks Laisanni.
"Go for it."
"So, in addition to the blade of the void, I'm from another world, and have otherworldly magic powers which I am drastically rationing because it turns out they're eating my planet."
"Ouch. Are there any worlds that aren't ending?"
"Not that we know of but I sent somebody to mine with a letter to suggest finding one to evacuate to."
"...If we try to find any worlds that aren't ending and can't, that has some really disturbing implications," muses Riale.
"Even if worlds in general come with a lifespan they shouldn't be on a coordinated schedule! This one has ended before while mine was still chugging along..."
"Yeah. I don't think it's likely that we'll find a bunch of worlds in the middle of ending. It just occurred to me that we might, and if we do, that means there's an even bigger problem than a couple of worlds coincidentally threatening to end at similar times for unrelated reasons."
"Yeah. One that deals in some weird amounts of advance planning."