Format refers to the ways you can play standard matches. Playing in Rotation format allows you to play using the five most recent card sets and basic cards in a match. Unlimited format allows you to use all available cards in a match.
In Rotation format, you can use the five most recent card sets and basic cards in a match. This format is recommended for players new to Shadowverse.
Usable Cards as of March 30, 2020 (PT)
12th Card Set: Steel Rebellion
13th Card Set: Rebirth of Glory
14th Card Set: Verdant Conflict
15th Card Set: Ultimate Colosseum
16th Card Set: World Uprooted
Basic cards (starter cards, main story rewards, Harnessed Flame, Harnessed Glass)
In Unlimited format, players can use all available cards. Note that there may be some restrictions placed on cards.
Restricted Cards as of December 28, 2019 (PT)