. "Note: At this point, Booster Packs began to contain 4 Ultra Rares instead of the previous 10. In addition, the ratio of Ultra Rares changed to 1:24, instead of the previous 1:12. This made them slightly harder to get then today's Secret Rares."@en . "List of Ultra Rare cards"@en . . "Note: At this point, Booster Packs began to contain 4 Ultra Rares instead of the previous 10. In addition, the ratio of Ultra Rares changed to 1:24, instead of the previous 1:12. This made them slightly harder to get then today's Secret Rares."@en . . .