Techinical suggestion for counters

Premise: it's just a suggestion on how to, not on what to do

To add counters in the game maybe you can just add a sort of token button, with a small image with trasparent bords (just to not create too much confusion when there are too much counters) that can be overlayed like xyz, but also to spells and trap

In this way the only thing you have to do it's just the image because you already have all the functions, it's a little rude solutions but doesn't take too much work.