Played this a lot while I didn't have internet ^-^ won 3 games in a row once! I think it's a great game, and I wanted to talk about it with you a bit so,, I guess here are some thoughts ^-^
I didn't read anything about the game before running it, so the coolest moment game 1 was the "aha, very cool" moment early on that my cards were my health.
Transmute + Dark Pact is the best card combo I've found O_O with a sealed deck, this plus Catalyst and some 0 cost cards wins every match turn 1
One time I played Shadow Twin and then Transmute and I only got 1 card back. I didn't know why at first, but I drew Call Of The Void both times I tried it and thought it was a hidden feature, which was exciting.
A very cool idea I had for a custom run would be that your deck composition goes on to the next game, so stealing cards or having cards stolen would be a more long term mechanic.
I've found that a thief deck has imo the strongest win chance, ruining the opponent's strategy (although if you steal just their weak cards, it can be devastating)
Anyways,,, thank you for the fun game! :D