yugioh retro pack booster box Yu-Gi-Oh! - 2 Retro Pack Yu-Gi-Oh! TCG Display de Pack

There are a few archetypes where this will work

A Wizards press release notes that nearly 60,000 card packs from the Let Your Spark Shine Secret Lair were sold, and this is "the largest Secret Lair donation and best-selling charitable product in the companys history." A total of $1,337,850 was handed over to The Trevor Project

Beyond those, however, the Mentor cycle of cards exemplifies this concept fairly well

The Ice Ryzeal , Sword Ryzeal and Ext Ryzeal are used to Xyz Summon Ryzeal Detonator which on summon places the Eclipse Twins under it as material

When it comes to the latest title, players have reported that only a small percentage of boxes contain these special packs, which makes them an especially rare and valuable find