Is there any effect on a Shardblade if the deadeye is really far away from where the Blade is?
The one that's trapped on the ship. Let's say they're taking him to the far side of Shadesmar, but the dude that owns that Blade lives in...
We will deal with that in the books. There is an effect, but that's not enough of an effect.
Considering no one says that their Shardblade is acting weird in two and a half thousand years.
That happens all the time in Shadesmar. If you were able to get it off the planet, it would have an effect.
If you as the owner of the Shardblade were offworld and you tried to summon it, that would be the effect?
Either way. But you can't take spren off-world. I mean, you can, but you can't really. Really all that I have in the notes for it to do right now, is to add slightly more time. So you're like, "That's weird that felt like not ten heartbeats, it felt like twelve." But it's like, you're on another planet, then it's suddenly speed of light type stuff. So suddenly it's like, "This is taking three years instead. That's a pretty big deal!"
...So I've got a few weird speed of light things mixed into the cosmere, and that's one of them.