Elite Trainer Boxes are a great way to get both a variety of Pokémon TCG cards and useful accessories.
 
Each Mega Evolution—Perfect Order Elite Trainer Box contains nine booster packs from the expansion, a full-art promo card featuring Tyrunt, 65 card sleeves, 40 Energy cards, damage-counter dice, a coin-flip die, a plastic coin, and a sturdy box to store everything.
 
There’s even a player’s guide that provides useful tips for building a deck with cards from the expansion.