You have to get into the mind of each character
(KONAMI) announces Yu-Gi-Oh
These will contain just seven cards, but theyll have 1 to 4 cards of rarity Rare or Mythic Rare, at least 1 foil card, and at least 1 full, borderless art card
Beedrill ex Charizard ex Wugtrio ex Pikachu ex Lucario ex Paldean Clodsire ex Tinkaton ex Bibarel ex Iono Pokemon Center Lady Red Team Rocket Grunt Pikachu ex (rainbow border) Paldean Clodsire ex (rainbow border) Tinkaton ex (rainbow border) Bibarel ex (rainbow border) Then the following Full Art Rare cards have a 2.572% inclusion rate as the 4th card and a 10.288% inclusion rate as the 5th card
Theyre fast, synergistic, and snowball quickly if left unchecked
The slightly simplified story is that cards in the Core Set (Unlimited through 9th Edition ) all have white borders, while cards from one of Magic's many expansion sets will be black bordered