Thread:NovaTsukimori/@comment-16256620-20180228204433/@comment-10719116-20180301020705

Usually a booster set includes 4-6 Ultra Rare cards, maybe 10 Super Rare cards, and the number of Rare cards is usually about around 40% of the number of Common cards. (i.e. Duelist Revolution's OCG version has 48 Common cards, which rounded up to the nearest tenth, which is 50, and rounding up the number of Rare cards to the nearst tenth is 20, using this math in tandem with the actual numbers, the actual amount of Rare cards to Common cards ratio is 37.5%) Unless your booster set has more than 1 cover card, it would contain only 1 "Ghost/Holographic Rare". Also, your set prefix should be more like "XXXX-XX0XX". The first "XXXX" being your booster set in a 4 letter prefix, the second being a 2-letter prefix that you base your cards' regional language on (i.e. EN for English, IT for Italian, JP for Japanese, etc.).