The set releases June 13 but given how fast the pre-orders have filled up, it might be a while until you can get your hands on these cards.
Shadowless Mewtwo Mewtwo is a personal favorite, and I'm sure it's many other people's favorite too
As such, this card is incredibly hard to find in mint condition (only 121 copies have been recorded with a PSA 10 rating)
Our ranking of the 10 best cards in Pokemon TCG Pockets Space-Time will feature a solid mix of buff EX cards, Pokemon with handy abilities, and trainer cards that should be useful in most competitive decks
Additionally, many players werent as careful when sliding them through the e-Reader, which further reduces the number of mint and near-mint examples of these cards
For example a creature might only have Hexproof while it's untapped