It honestly reminds me of a fresh modern version of Hero Academy which I loved when it came out. Except with Duelyst the battles happen much faster because it's not asynchronous.
Duelyst is still early access but it's obvious that this game has lots of potential. I played enough to know that I like it and that I'll want to play it when it actually releases. But, I don't like pouring a lot of time into early access games so this one will go to the side until it's officially released. When it does, you should seriously think about trying it.