mega evolution enhanced booster box msrp Pokémon TCG: Mega Evolution Enhanced Booster Display Box (36 Packs & 1 Promo Card) – Pokémon Center Official Site
Description
But I have no idea why they're numbered

1 Phyrexian Tower

In the Pokmon TCG: Collector's Album Box, you get a Black & White mini-collector's album to store up to 60 of your latest and greatest Pokmon cards

Leaden Myr

Special Summon 1 "Dark Magician Knight" from your hand, Deck or Graveyard.
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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2