Great art and animation! Very creative Idea!
The effects on the base deck are a bit too complicated to understand how to play well as a first time player. I got the hang of it after the second time I died. Maybe have in the starting deck an easy combo, but relatively weak compared to the late game ones, could have helped. Also have key word (like the ones in magic) or symbols that mean always the same thing could have eased the cognitive load. Imho a bit more playtest on the UX might be needed.
Other than that this is a very solid game for a game jam, I hope you continue working on it after the voting period is over, bravo!