That was intriguing! The premise and design is charming, and I like the extreme the casino theming is taken to.
The mechanics are competent, but a bit confusing and repetitive. I'm not sure if I missed an in-game explanation, but I never figured out how cards and dice relate to damage and defense. That said, the battle art is gorgeous!
The audio balancing is strange. At default volume, the music is quite soft, but then several sound effects in the battle sections are quite loud and peak the audio above 0.0 dB.
All-in-all, great work!