While Pokémon Sun & Moon will be out in November for the Nintendo 3DS, Pokémon TCG players will have to wait until early 2017 to get their hands on the new set that features the all-new Pokémon.

It may be well worth the wait, as it was announced today that the new set will introduce Pokémon-GX cards. Pokémon-GX will have new attack and devastating attacks that can alter the game. The trick is that a player can’t use more than one GX attack in a game. Not one GX attack per Pokémon. One per game.

Each Pokémon-GX has a devastating GX attack that can instantly reverse a player’s disadvantage or create an early-game advantage. A player can’t use more than one GX attack in a game, so deciding which GX attack to use and when poses a strategic challenge. Other than that GX Pokémon are similar to EX Pokémon. They have high HP, powerful attacks, and earn the player that defeats them two prize cards.

The Legendary Pokémon Solgaleo and Lunala, who appear on the covers of the Pokémon Sun and Pokémon Moon  games, will be featured in the Sun & Moon expansion as Pokémon-GX.

Solgaleo

The Sol Burst-GX attack allows a player to attach up to 5 Energy cards from their deck to their Pokémon in any way they like, making it a powerful attack that’s useful for super Energy acceleration.

Lunala

The Lunar Fall-GX attack lets a player immediately Knock Out any of their opponent’s Basic Pokémon