MopCards is a simple game: There's 3 elements, each one beating one and failing to another, and all of them with a variety of abilities
The actual Mechanics of the game are entirely player-controlled, and encourages collecting the 30 different cards.
You can combine 3 MopCards of a single type with 3 paper to make a Booster Pack, which gives you 3 random cards of that type.
In Version 1.3, You can obtain Mystery MopCards from Zombies, Witches, Pillagers, Bats, and Wandering Trader trades. You can also occasionally find Card Ghosts which drop Mystery MopCards when killed. Burnt Card Ghosts may drop a Wild Booster Pack.
Version 1.4+ you can only get them from Wandering Traders and Mop Ghosts.
I may add more cards later on, if I can balance them with the rest.
Please let me know if you encounter any major issues with the mod!