a very simple datapack that adds cards and Classes into your game with just some very (not)simple command here's a list of every cards and classes(I would actually have a video talking about all of them)

card

• charge card(stone sword and paper, give strength five and remove on strike)
• mace card(wind charge and paper, give strength five and jump boost 4 for 30 second(as i remember)

class

(all accessible with /trigger class command, these are hard to describe)

• medic
• fighter
• ranger
• mage
• barbarian
• rogue
• paladin

special

• hyper card(need 1 ender eye, 1 ender pearl, 1 end crystal, diamond sword and axe, 1 nether star, 1 paper, 2 gold ingot)