There are multiple types of cards within Magic: The Gathering, with many of them also being divided into subtypes that may have additional effects or requirements to play, making the pool of cards available for deckbuilding incredibly large. On top of that, some cards can turn existing permanents into different types of cards or can have multiple card types, such as Planeswalkers that become Creatures or Creatures that are also Enchantments. Gimmicky cards can be particularly interesting to use in Magic: The Gathering decks because they can alter usual parameters, but some card subtypes end up being either too strong or too broken, and two of them may never be reprinted.