It could just be me, but it isn't very clear what your problem is.
On card selected add key to dictionary object.
on start of game if key exists set card one to blablabla.
Should work right?
Just make sure to set everything that should be global to global in properties.
(maybe this was actually what you meant in the first place, haha, if you select an object in the properties window under the uid there's the option to set it to global.)