"Ultimate Boosters" (アルティメットブースター Arutimetto Būsutā) are packs of cards that are used to build or edit decks with new cards, but are separate from the standard Booster Sets. Each pack contains 7 random cards out of 70 different cards available. RR or greater is guaranteed per pack.

The ratio of rarity is divided into 2 BR/6 RRR/14 RR/20 R/30 U, though ratios may vary. In addition to this, 6 of them are also SP. The Premium Rare is a unique card that signed by the voice actors.



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