I love that you have a README and License file (main criteria for open source category).
Cute graphics! Love the intro; really appreciate when people put effort into the narrative. The music is really cool and the whole game concept is great. Very satisfying getting the right combos, and the music is so catchy that I want to keep playing. The "balanced" battle cries are great "YOU ARE JUDGED!". Love it. Nice work. Would love to see more cards implemented in future. The idea of the four counters (power, defense, short, and dust) are creative and fun. Intuitive came that's addictive.