The Best of XY is a 188 card sub-set released on April 21, 2017 in Japan. Similarly to the Premium Champion Pack released during the XY BREAK Era, the set includes various reprints of popular cards from the XY and XY BREAK Eras, while also including a number of new cards and Full Art prints. Despite being released during the Sun & Moon Era, the cards are printed with their original card template, with only a slight change in the positioning of the card number, and lack of printed rarities. Each card (with the exception of Pokémon-EX, Mega Evolution and Pokémon BREAK cards) also has a Reverse Starlight Holofoil print.
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.