Completing a set has levels. A base completion is one of each numbered card. A master set is every print: every foil treatment, every variant art, every secret rare above the printed set number.
Why collectors chase them
A master set is the long game of collecting. The commons come fast, the reverse foils slow you down, and the last few chase cards are the story you tell when the binder is finally full. Sealed products are their own hunt and are counted separately on our pages.
Your counter
Own at least one card from a set and its set page shows your progress: the exact count of distinct prints you hold against everything the set contains, with a bar that fills as the binder does. It reads from your portfolio automatically; there is nothing to maintain.
Start from the sets index, pick your game, and see where each collection stands.