Thought to register after reading your very balanced and non-knee jerk review of Clash Royale, a game I thoroughly enjoy.
Reading through the article, it's quite clear that the "CCG" genre has become varied enough to have specific sub-genres come into their own, or at least highlighted.
For example, in no way is Clash Royale comparable to a game like Hearthstone, or Ascension. Its core tactics involve timing, reactions, perception and placement, and the card-draw / bluffing elements only come into the picture at the highest level play where very good players can guess what their opponents have / do not have.
Deck Building Games (DBG) also have become more common place - Star Realms is an excellent game for single player suffering from clunkiness and poor production value for multiplayer.
Then there's the hardcore P2W CCG games like Tyrant Unleashed - shallow gameplay and blatantly P2W yet with F2P content that still keep F2P players on, competing at a lower tier due to a social guild system superior to most games in the genre and an idle-game like ease of play. A similar style game, less polished and streamlined game is Deck Heroes.
And competing with MtG and Hearthstone are "serious" CCGs like Spellweaver, a credible alternative to both.