Here's why:
* HP is a fixed value: Every Pokémon card has a specific HP value printed on it. This value cannot be changed during the game.
* No cards grant infinite HP: There are no cards in the TCG that give a Pokémon infinite HP.
* Special abilities and effects: While there are cards with abilities that modify HP, they have limitations. For example, some cards might increase HP temporarily or prevent damage, but they don't create infinite HP.
Therefore, Mew, like all other Pokémon in the TCG, has a finite amount of HP determined by its specific card.