Between 0 and 12 cards Between 0 and 3 Legendary Duelists with a Character Skill For example, a Side Deck could be made up of 9 cards and 3 additional Legendary Duelists with a Character Skill or 1 additional Legendary Duelist with 3 different Character Skills Any changes can be made to the Deck between Duels of a Match, including the following: Adding Cards Subtracting Cards Changing Legendary Duelist Changing Character Skill The Deck must be legal for play (appropriate number of cards in the Main and Side Deck, complies with the Forbidden and Limited list available within the DUEL LINKS app)
Others might be a little more obscure, or less MTG-focused, but either way there are plenty of avenues to turn your cards into cash
First, Partner
After siding, the number of cards in your Side deck must be the same as what you started with
2 Quarter Century Secret Rares (16 of these cards are also available as Collectors Rares)
December 2026 Duelist Box: Prismatic Summon Attribute DARK Level 1 Monster Type Illusion Card Type Fusion/Effect ATK 0 DEF 0 Card Text 2 monsters with different Types (Fiend, Illusion, or Spellcaster) If this card is Special Summoned, or at the end of the Battle Phase, if this card battled: You can equip 1 monster your opponent controls to this card as an Equip Spell
