World Championships 2017 is a World Championships series Pokémon TCG set released on Nov 17, 2017. Its numbered run goes from Rowlet (#9) to Alolan Ninetales GX (#22), and the 21 cards past #32 are its secret rares.
By market price the chase card is Giratina (#XY184) at $11.85, followed by Diancie (#94) at $10.92.
This checklist lists 32 cards in collector-number order, each with its rarity and, where one exists, a market price.