japanese inferno x booster box – Be Clear Japan Inferno X is a strong choice. "NEW" Opening Pokemon Inferno X

It was included on the only Ultramarine-themed card shown during the presentation, and it allows players to field copies of a newly summoned creature for the cost of two additional mana of any color

These are all of the mechanically unique regular Mewtwo cards from Base Set up until Scarlet & Violet 151 (this excludes reprints, multi-prize Mewtwo cards and specially named cards like Rockets Mewtwo)

The holos are printed on the confetti holofoil paper used exclusively for McDonalds sets

Still, I'd recommend that if you want to upgrade Elven Empire with another precon and without serious budget constraints, Guided by Nature is a good step in the right direction

If you can remove their threats, youll eventually find a source of card advantage to put you over the top