Ice-choked tower, Mondavia, Nanglangka.
What backs should I put on the “Black Scrolls of Rassilon” ,” Interstellar War”? The black border suggests just a Master back but are these cards “special” should I double side them?
These cards are special, but a standard Master card-back is fine.
and “The Doctors TARDIS”
Standard Doctor card-back.
Also why does “Well Its Probably Your Tyrodial Time Dilators” and possibly some other cards have yellow/gold borders?
These are normal cards - the border is to help you quickly fish them out of the discard pile.