Quote Originally Posted by kyuven View Post
The only way they'd have "cash shop exclusive" cards is if they restricted the boosters to the cash shop, which doesn't make a lot of sense as there wouldn't be incentive to pick up the game in the first place and zero to keep playing. The only cash shop exclusive cards i could see would be foils, which are literally shiny versions of cards you can get normally.
Copy and Paste from Blizzard - Hearthstone