If this is in another post, my bad. I looked and couldn't find anything.

If I am getting this right, when you do a sleight, you loose a card? Is it always the best card in the slight, or just the first card in it? do you have to use a green card of some sort to get them back?

Also, do you have to get a "premium" map card to premium your cards?

Lastly (I know I'm full of questions today), when do you start getting cards higher than 9? I am at the last board of the first world deck. Do I have to wait for later to get them?