Looks like this one is shaping up to be really interesting, it's a game developed with the ideas of the board game Settlers of Catan and Hearthstone. so far it is only available for Mac and Windows. but they plan to make this fully cross platform as in Linux, iOS, the various game consoles and Android. I've watched it on twitch being played a couple of times. worth a look if anyone really likes TCGs but would like a more strategic board game aspect added to it.
I've personally been playing Hearthstone since beta, since Blizzard refuses to make a native Linux client then this game may end up getting my money instead.
check it out here: https://www.faeria.com/game
it's also on steam: http://store.steampowered.com/app/397060