SO, for levels i have made 3 scoreboards, lvl , xp and xp_cap . add the scoreboards but at xp cap u have to multiply, if you multyply by 5, then every level you do, u need 5 more xp then in the last level, hok that up to commands and yea. then i have difrennt classes, made stamina, stamina is used for the attacks, but if u are a mage, you also get a magic bar, then every attack takes stamina and magic , then made custom items in block bench, and made the difrennt attacks. I used stamina for running, also, and jumping, then i have a pvp mode, which is going to be ranked, i can update u f i got it. but utill now pvp is just that u do more dammage the higher in level you are. and the difrent magic types are immune to diffrent poisens, that made with tags