The third card type is the Energy card, of which each is associated with one of the six elements and are needed in order for a Pokmon species to use their various techniques
If the copied creature is copying something else (for example, if the copied creature is an Evil Twin), then the token enters as whatever that creature copied, with the listed exceptions
Compared to the randomised nature of booster packs, with a MTG box set you know exactly what you're getting inside - it's a fixed collection of cards, often themed around a particular plane or style
At the beginning of each opponent's upkeep, if that player has no cards in hand and this enchantment has two or more quest counters on it, you may have that player lose 5 life
This means serious collectors will have to collect two sets of reverse holos, with one set being much rarer than the other