Awesome!
At first I felt it was a bit lacking, but after I realized I had stayed up for another hour and a half later than I wanted to stay awake playing this game, I realized that this was pretty enjoyable.
I loved during some parts where it became somewhat realtime. It was pretty awesome and added an interesting challenge. It happens when you get stunned or confused (I think) and I had to quickly reply with my defense that purges my negative buffs. It made it rather exciting.
I like the idea of a realtime cardgame-like game. Even if that was not your intention with this, you really should expand on this. It was really cool.