So, if you remember these two questions:
What can these negative-mass-free wormholes be used for? and Scientific explanation for summoned creatures , you probably know what I'm talking about.
Basically, I wanted to have summonable creatures in my setting. There were two ways to accomplish that:
The Attack-on-Titan way suffered from the problem that synthesizing a 60-meter Hermann Göring from the ground up in stopped time has severe consequences once time begins moving again that, realistically, should affect the summoned creature as well, instantaneously roasting it.
The other is the hammerspace route. Basically, on the dark side of the moon, there's a place, called the titan realm. The place is Anakin Skywalker's nightmare, since it's basically a huge desert with a stable temperature of 20 °C. The titan realm is renown for its coffee, which tastes pretty good despite being 100% sand.
When not "prepared" for summoning, the card-creatures recuperate here.
Once the notice is sent, the wormhole locates the card-creature and "eats" them, where they stand and regardless what they're doing, this has to be done to make sure they get in place on time (this wormhole is always longer than going straight).
The card creature is supposed to wait just by the entrance for the signal to come out, making it seem like they teleported there.
Now, there's a problem, however, for a start, this requires both entrances of the wormhole to be able to move.
I'm unsure if the wormholes could move without disconnecting, and if they can indeed be moved (not by heartfelt words, though) how should they be moved?