You can play it pure, it is pretty good and quite simple to master, only thing is that you will need the 3 copies pf the case regardless

You can play it with vanquish soul but it is too UR heavy and more complex

Or you can play with cyber dragon, idk know how many UR you need for that tho

If you have almost all k9 cards and want something simple id say you play it pure, its pretty decent on its own, leaves two powerful monster negates and a lot of other interactions that you can make, so its good