awakening of the new era booster box case Amazon.com: BANDAI NAMCO Entertainment One Piece Trading Card Game OP-05 [ENGLISH, 24 Packs] : Toys & Games part of the OP Booster Box Prices | One

There are 15 Pokmon cards in the promotion, according to the Pokmon website: Charizard Pikachu Miraidon Jigglypuff Hatenna Dragapult Quagsire Koraidon Umbreon Hydreigon Roaring Moon Dragonite Eevee Rayquaza Drampa In addition to the cards, every Happy Meal purchase made through the McDonald's app unlocks an in-game bonus, at no cost, for the Pokmon TCG Pocket app

This set allows you to simultaneously control the board while summoning multiple monsters to put your opponent in a tricky situation

And yeah that mewtwo referenced by KEI is almost certainly the one Bulbapedia is talking about

Elvish Mariner Elvish Mariners another way to affect the board simply by scrying, plus it gives you a freebie scry 1 on attacks each turn