xP// Trading Cards for Spigot/Bukkit This is simply a 1.13 port with no error fixing or anything of the sort. just straight up porting to 1.13
original author and their original work is here https://github.com/Xenoyia/xPTradingCards, and on spigotmc.org here https://www.spigotmc.org/resources/xp-trading-cards.9378/.
this is only a fork of that original work. all credit goes to Xenoyia.