uta card sleevs (TCG Sleeves) First announced on March 7 One Piece - Uta Foil

Roughly one Secret Rare turned up per booster box, so survivors exist, but flawless ones are scarce

For example, if EX1-005 [Tyrannomon]'s original card information is changed, its original color will become white, and EX1-005 [Tyrannomon]'s effect will also treat it as green, making it a 2-color white and green Digimon

From some of the most popular Pokemon ever, like Charizard, to other superstars, like Rayquaza and Tyranitar, the valuable cards in Dragon Frontiers can only be equaled by the best Pokemon in the TCG

It's possible that redesigning the deck would solve that problem, but I'm skeptical of the benefits