Hmm, how do we escape from the Frozen Throne? Its domain is clearly not truly absolute, but it's beyond the ability of anyone currently trapped to get out.
Sufficiently powerful teleporters work, but only once, and by the look of it the throne may have recently hardened itself against that particular exploit.
I suppose a Vista-power would also work, assuming it is strong enough to contest the Throne's own spatial warping. Doesn't have to win, exactly, just be strong enough the Frozen Throne can't warp space into a pretzel to keep them in.
Black Swan could probably do it, assuming she's protected from mental attack, by outspeeding its ability to warp space. I suspect it can't keep up with her (near) literal lightspeed and ability to turn instantly. But she can't really protect anyone else while doing this, so that's not useful for getting others out.