pokemon tcg evolving skies booster box POKÉMON Sword and Shield In particular Pokemon Evolving Skies Booster Box

First off, lets focus on the type of cardstock used

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Creatures that tap opposing threats are often among the strongest creatures in the format because they play offensively and defensively against your opponents most threatening creatures

Unlike many other Secret Lairs, Liler Walkers was only available on the Hasbro Pulse website, not the Secret Lair website

Throw in some removal and interaction to both keep you alive as well as defend the combo, as well as Insaitable Avarice to tutor up pieces, draw cards, or both, and you've got a surprisingly fast combo deck in a format not really known for combo decks