Called "Match Battle", the products generally come with a set of a booster pack containing 4 cards (one of them with a categorized foil called "Glass Stained", which is a signature feature of McDonald's products and others being non-foil), a manual covering the body of the card (HP info, Pokmon name, illustrator, attack cost, etc.), a cardboard coin, and a spinner
A Starter Deck is perhaps the easiest way to get introduced to a trading card game, as it provides players with a full list of cards with pre-built synergies to learn and master
In most cases these cards are basically identical, but because you can respond to the life gain from Armadillo Cloak, there are a number of little tricks players can do to manipulate things, such as casting a burn spell in response to the trigger, or copying the ability while its on the stack
Old Gonti is incredibly popular, and its seen as a good leveler for power levels