Shadowverse

Who needs visuals, lol? Their absence didn't hinder Hearthstone in any way.

Well, it depends on what you consider visuals. Yes, Hearthstone has many mediocre and even bad card arts (although there are some good ones). But in terms of style and thoughtfulness of all these menus, buttons, that boxy main menu, and other things that create the atmosphere of a tavern, it's hard to imagine any other CCG competing with it.