Rule 717.2 · Attraction Cards
Attraction cards do not begin the game in a player’s deck and do not count toward maximum or minimum deck sizes. Rather, a player who chooses to play with Attraction cards begins the game with a supplementary Attraction deck that exists in the command zone. Each Attraction deck is shuffled before the game begins (see rule 103.3a).
Subrules
In constructed play, an Attraction deck must contain at least ten Attraction cards and each card in an Attraction deck must have a different English name.
In limited play, an Attraction deck must contain at least three Attraction cards from that player’s card pool, and may contain multiple Attractions cards with the same English name.