Pokemon 2017 Ash Vs. Team Rocket 30 Card GX Starter Set. It was only sold at the Pokemon Centers and a few toy stores in Japan, in April, 2017, for a very limited time and in very limited quantity. The cards are numbered #001-026 and the set contains more than one of some cards.
The set contains:
30 Pokemon Cards (Includes 1x Pikachu GX Holofoil Card and 1x Mimikyu GX Holofoil Card)
1 Sheet Damage Counters/Markers (cardboard)
2x GX Markers (cardboard)
1x Pokemon Coin (Rotom Pokedex)
1x Playmat (paper)
1x Rule Book (In Japanese)
1x Players Guide (In Japanese)
Condition: Brand New. Factory Sealed.