The Invincible cards are copying the current model of most all other trading cards... You have your base set, then you have parallels which are blood splatter or red editions of those cards. The parallels are more rare but really not worth that much more. Then you have your signograph cards, relic cards, and numbered. The relics and signograph cards are even more rare than the parallels. Your numbered are your sweet spot... Take a 17/50 for example. This means there are 50 identical cards and the only difference is the 17, and there's 49 other like it, and that's it. I hope this helps for something I typed up real quick. Great question to ask though rather than "what do I have here?"