https://www.gamespot.com/articles/theres-a-new-pokemon-card-type-and-it-looks-extrem/1100-6461384/

At the 2018 Pokemon World Championships in Nashville, Tennessee, the company debuted a new type of Pokemon card. Called Tag Team Pokemon-GX, the cards will feature duos of Pokemon for incredibly powerful moves and high HP. The crowd at the event, which includes competitive and pro-level trading card game players, was noticeably excited about the card.

So far, only one Tag Team card has been revealed: Pikachu & Zekrom-GX. It has 240 HP and two powerful attacks that deal 150 and 200 damage respectively; if certain conditions are met, it can also deal 170 damage to benched Pokemon. When the card is knocked out, the opponent takes three prize cards (as opposed to two for normal GX cards). You can check out Pikachu & Zekrom-GX below.