The highest HP value a Pokemon card has ever had is 390, which was on the Mewtwo GX card from the Forbidden Light set.
Here's why there are no Pokemon cards with 1000 HP:
* Game Balance: If a Pokemon card had 1000 HP, it would be incredibly overpowered and make the game unbalanced. The game is designed with a variety of strategies and strengths, and a card with that much HP would be too difficult to defeat.
* Card Size: The physical size of a Pokemon card would need to be enormous to fit that much HP on it.
* Gameplay Design: The HP system in Pokemon TCG is designed to create strategic decisions and make the game engaging. A 1000 HP card would make the game less dynamic and less fun.
It's important to remember that Pokemon cards are designed for gameplay and to create a balanced and exciting experience for players.