what is a master set in pokemon cards are true Pokémon of 151? Pokemon Perfect Order Complete Master

This version of Biancas Devotion is number 209/162 in Temporal Forces

All Ultra PRO Deck Protector sleeves are archival-safe and acid-free, and are made with our proprietary ChromaFusion Technology to prevent peeling

Now if only I can figure out a way to shuffle one into my normal-sized deck

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Magnetic cases or graded slabs for long-term storage

Realistically probably some combination of Silver having it and it fighting with Toto dile in the anime