The visual style and means by which you've framed the endless runner core gameplay is superb.
I feel the rate at which the bar deplete detracts from the core vibe of the game. Endless runners typically have a slow pace to begin with which climbs over time. I think reducing the rate at which the bars deplete would give you more time to strategize, more time to enjoy the visuals and more time to read the cards.
Overall though this is great fun and a very creative take on both the theme & framing.