Leareth is awake in a fraction of a second, as it happens, but not quite in time to do anything except (pointlessly) fling power into his shields, before he's suddenly not in his bedroom anymore - there are stars–
–orient, and he opens his Othersenses, and - they aren't there, he can't sense minds or magic, it's not just a lack of either it's that his senses are blind, no, gone. His shields are gone, or at least he can't feel them. His artifacts aren't working. He tries to put a barrier around himself and that doesn't work either - and he's falling, except not, he's floating and not moving all that fast but he feels like he's falling–
–this is what the emptiness between stars would be like, he's hypothesized, except that that wouldn't have air, and whatever else is happening, he isn't currently suffocating.
What where why how–
Leareth is terrified. Possibly more afraid than he's ever been. He doesn't know where he is, he can't orient because he can't see, nothing makes sense–
And panicking about it absolutely isn't going to help, so he doesn't. He floats, unmoored from everything, in a bottomless pit of stars, and he looks at them with his mundane eyes - the first thing he thinks to check, rather pointlessly, is whether he recognizes any constellations.