sorcery contested realm booster box Mtg Conspiracy Sorcery: TCG Beta Booster Box – Factory Sealed + Frank Frazetta Foil Promo Saga and 1 Elite Sorcery: Contested Realm Booster Boxes

collector shows scheduled for the next year.

For collectors who want the best value per dollar and access to the error card possibility the JPN box is the clear winner

Walgreens and Meijer both have them in the halloween section, not the toys or card section.

If you really wanted to cover all the bases, you could add 9 more cards that, according to my research, are rarely but occasionally played competitively these days: Arrogant Wurm, Beetleback Chief, Bottle Gnomes, Fyndhorn Elves, Order of Leitbur, Order of the Ebon Hand, Portent, Shield Sphere, and Whispers of the Muse

Union Controller Level 6 LIGHT Machine Fusion Effect Monster ATK/ 2200 DEF/ 1900 1 LIGHT Machine monster + "Y-Dragon Yearhead" or "Z-Zillion Tank" Must first be Special Summoned (from your Extra Deck) by banishing the above cards you control