Rule · Chapter 2
cr:2.6.6
Metatypes are either hero-metatypes or set-metatypes. Hero-metatypes specify the moniker(s) of a hero, and the card can only be included in a player’s card-pool if it matches their hero’s moniker(s). Set-metatypes specify the the name(s) of the set the object can be used in as defined by tournament rules.