[quote=@Vec]
[@Double Capybara] ah, i was of the impression that dreams didn't care about whether they on a different plane or not. I mean, it's not like Ull's plane is "outside" the Universe. It exists inside the normal universe, and is shielded by Ull's powers from others. 
[/quote]

I don't think they are affected, what changes is just how much direct control Ilunabar has over them. So say, a person in another plane should dream normally, but Ilunabar can't pinpoint from where in the universe it comes from like she did with Arcon.