Let's design a fucking game together

Hi nerds. I want to design a website with a small card game (like Yugi oh or Magic or that kind of shit) but the thing is has to:
* Have a fixed set of cards (that is no custom cards)
* Games should end in a range of 10 - 20 turns mostly.
Since you are nerds and expert on this kind of shit and enjoy the autism of designing things, i wonder if you could kindly help me.

UwU

I have a better idea for a game, it's called spell of hamstry and it's an isometric old school rpg where you kill hamsters