AttackCode Check
Look at 1 of your opponent's face-down Prize cards.

Burning Shadows is a set in the Sun & Moon series. It was released on August 5, 2017. The printed size is 147. This checklist is longer, at 177 cards. Porygon is 103/147, in position 107 of 177 on this checklist. Before it is 102 Persian, and after it is 104 Porygon2. The listed rarity is Common.
Porygon is a Basic Colorless Pokémon with 60 HP. In the Pokédex this is Porygon (#137), generation 1 (Kanto). The card lists Porygon2, Porygon2 (#233) under evolves to.
Shin Nagasawa illustrated this card. The same name is on 303 other cards in the catalog.
Porygon (#137) has 23 other cards in the catalog. Those other cards are in 22 sets. The other printings with a release date run from 1999 to 2025. The earliest other card is Porygon 39/102 in Base (1999). That card lists 30 HP, and this one lists 60 HP. The rarity there is Uncommon, and here it is Common. Tomoaki Imakuni illustrated that card, and Shin Nagasawa illustrated this one. 13 other cards of Porygon list a different HP.
The attack Code Check lists no damage number. The cost is Colorless. Look at 1 of your opponent's face-down Prize cards. Beam is another attack lists 10 damage. The cost is Colorless. Weakness is Fighting ×2. Retreat cost is 1. The flavor text reads "Roughly 20 years ago, it was artificially created, utilizing the latest technology of the time."
I keep a set binder for Burning Shadows, meant to hold every card of that set. This card is one slot in the Burning Shadows set binder. A generation binder holds one card of each species. Porygon can fill a slot in Generation 1 binder (Kanto). I still need this card.
Look at 1 of your opponent's face-down Prize cards.
Roughly 20 years ago, it was artificially created, utilizing the latest technology of the time.
Burning Shadows, in the Sun & Moon series. It was released on August 5, 2017. The printed size is 147.
103/147. It is entry 107 of 177 in this checklist.
Shin Nagasawa. The catalog lists 303 other cards with that illustrator.
Common.
Porygon #137, generation 1 (Kanto).
Code Check and Beam (10).