This is great, as bad as it looks :P
The StS combat is tried and tested, and your spin on the mechanics and cards sings well with the core idea of the game. I encountered no bugs, but sometimes it felt like i transitioned to the win screen the instant I killed the enemy and it was hard to understand what happened if i didn't fully calculate my move. The card pool is kind of limited but I am sure you are aware of that :p
You can check out a game I made art for <3 (make sure to comment :p)