Pokemon TCG Japanese The Best of XY Japanese Booster Box

1 factory sealed booster box

Special set

Language: Japanese

Release: April 21st 2017

 Each pack contains 15 cards instead of the usual 5, with each pack containing one Pokémon-EX, Mega Evolution or Pokémon BREAK card, as well as one Reverse Starlight Holofoil card.

"The Best of XY (Japanese: ハイクラスパック THE BEST OF XY High Class Pack The Best of XY) is the name given to the third Japanese subset released during the Sun & Moon Era of the Pokémon Trading Card Game. The set consists mostly of reprints of cards from the XY and XY BREAK Eras. It features Pokémon-EX, Mega Evolution and Pokémon BREAK." -bulbapedia