Create your cards!

I've made everything more readable:

{
    name:"DragonFireGames", // Name
    rarity:"Legendary", // Rarity
    hp:5200, // Starting HP
    def: 5000, // Max HP for heals
    image:"https://mcdn.wallpapersafari.com/medium/75/47/2gJuCk.jpg", // Thumbnail
    offx: 1, // Offset the thumbnail in the x direction, range: (-1,1)
    offy: 0, // Offset the thumbnail in the y direction, range: (-1,1)
    hoverDesc: "The dev of FCR and Codémon.", // Description from hover
    desc: "The developer of FCR. Good at game development as well but loves tech demos. Takes pride in their use of keyValues & outside sites. Made Codémon.", // Long description
    hpcol: 255, // color of hp
    //isEX: true // Defaults to true for legendary/epic/god cards, false otherwise
    effectModifiers: { // Status modifiers
      "Laggy": 0.5, // If a number it will multiply the lvl by that number
      "Arrogant": function(e) { // Function to apply to the effect
        e.turns--;
        return e;
      },
    },
    moves:[{ // List of all moves
      name:"Admin", // Name
      description:"Strike your opponent down for 300 ATK. Each time this move is used, its damage increases by 100 ATK.", // What does it do?
      cost:1, // Cost in points
      cooldown:1, // How many turns before it can be used again
      use:function(self) { // Code for how it works:
        pickOpp(function(opp){
          opp.hit(300+self.admindmg);
          self.admindmg += 100;
        });
      },
      //flavor: "text", // Optional flavor text
    },{
      name:"Lag Bomb",
      description:"Lag out your opponent with 3D minecraft so they can only attack every other turn for 4 turns. Deal 200 ATK.",
      cost:3,
      cooldown:1,
      use:function() {
        pickOpp(function(opp){
          opp.hit(200);
          opp.giveEffect("Laggy",5,4);
        });
      },
    },{
      name:"Special - Reflection",
      description:"Hack code.org and deal as much damage as has been taken by all of your cards in your hand.",
      cost:5,
      cooldown:2,
      use:function() {
        var dmg = 0;
        for (var i = 0; i < selfHand.length; i++) {
          dmg += max(selfHand[i].parent.hp-selfHand[i].hp,0);
        }
        pickOpp(function(opp){
          opp.hit(dmg);
        });
      },
    }],
    //flavor: "text", // Optional flavor text
    setup:function(self) { // Called when card instance is created
      self.admindmg = 0;
    }
  },

seek a max of 3, though most common/uncommon cards will have 1-2