There are cards that are more rare than others in inclusion rates. Some will only be 10 copies throughout all the Decks released, some will be 300.

1 Star Hidden Rare Cards (300 copies included)

• Blue-Eyes White Dragon (Yu-Gi-Oh! Duel Monsters Saikyo Card Battle! Get Your Hand On Blue-Eyes! Special Clear Campaign!!)
• Dark Magician Girl (Yu-Gi-Oh! World Championship 2017 Visitor Promo Card)
• Blue-Eyes Alternative White Dragon (Yu-Gi-Oh! World Championship 2017 Visitor Promo Card)
• Monster Reborn (Yu-Gi-Oh! World Championship 2017 Visitor Promo Card)

2 Star Hidden Rare Cards (25 to 50 copies included)

• Insect Armor with Laser Cannon (Yu-Gi-Oh! Duel Monsters II Dark Duel Stories)
• Crush Card Virus (Yu-Gi-Oh! Duel Monsters II Dark Duel Stories)
• Harpie’s Feather Duster (Yu-Gi-Oh! Duel Monsters II Dark Duel Stories)
• Dunames Dark Witch (Yu-Gi-Oh! Duel Monsters III Tri Holy God Advent)
• Garnecia Elefantis (V Jump July 2000 Promo Card)
• Fairy King Truesdale (Yu-Gi-Oh! True Duel Monsters 2 Forbidden Memories)
• Cipher Soldier (Yu-Gi-Oh! True Duel Monsters 2 Forbidden Memories)
• Slate Warrior (Yu-Gi-Oh! True Duel Monsters 2 Forbidden Memories)
• Electromagnetic Bagworm (Yu-Gi-Oh! True Duel Monsters 2 Forbidden Memories)
• Rigorous Reaver (Yu-Gi-Oh! True Duel Monsters 2 Forbidden Memories)
• Divine Knight Ishzark (V Jump Autumn 2005 Subscription)
• Destiny HERO – Disk Commander (Yu-Gi-Oh! Duel Monsters World Championship 2007)
• Ice Master (V Jump Sprig 2007 Subscription)
• Exodius the Ultimate Forbidden Lord (Weekly Shonen Jump 35th Issue of 2007)
• Phantom of Chaos (Yu-Gi-Oh! Duel Monsters GX Tag Forces 2 Master Tag Duel)
• Blue-Eyes White Dragon (Yu-Gi-Oh! World Championship 2015 Visitor Promo)
• Dark Magician (Yu-Gi-Oh! World Championship 2015 Visitor Promo)

3 Star Hidden Rare Cards (10 copies included)

• Kanan the Swordmistress (Yu-Gi-Oh!Duel Monsters National Tournament)
• Perfectly Ultimate Great Moth (Yu-Gi-Oh! Duel Monsters II Dark Duel Stories)
• Seiyaryu (Yu-Gi-Oh! Duel Monsters II Dark Duel Stories)
• Sengenjin (Yu-Gi-Oh! Duel Monsters II Dark Duel Stories Duelist Legend in TOKYO DOME Tournament Participant Promo Card)
• Blue-Eyes White Dragon (V Jump Festa 1999 Visitor Promo Card)
• Blue-Eyes White Dragon (Chinese Version) (V Jump January 2000 Promo Card)
• Dark Magician (Chinese Version) (Weekly Shonen Jump 3rd and 4th Jumbo 2000 Issue Promo Card)
• Blue-Eyes White Dragon (English Version) (Weekly Shonen Jump 2000 27th Issue)
• Dark Magician (English Version) (Weekly Shonen Jump 2000 27th Issue)
• Dark Magician Girl (Yu-Gi-Oh! Duel Monsters III Tri Holy God Advent Official Tournament Street Duel Legend of Power Prize Winner Prize Card)

Source