There is only one type of card at Metamorphose: regular. Categories include attacks, characters, endings, openings, scenes, series, transformations, and member made. All cards are worth one, and most decks have 20 cards with the exception of attacks and endings and some random decks, which have 15.
Levels are based on card worth with 10 levels total.
When a player has collected the total appropriate amount of cards in a deck, they obtain its master badge. Mastered decks cannot be traded off.