Yup, that's me. Long time no see, fangface/abstainer.
For users that are interested, I'll give further details: It is indeed based off of Hearthstone, but there are no classes. Instead, elements replace the heroes and class cards, and dual-element decks are fully possible. Structures have also been added, as well as numerous different skills.
In this current Alpha, there are over 170 cards, all custom made.
No Mac support.
All players start with all cards available.
And the program I used is a bit like Dueling Network, where everything is done manually.