Mewtwo

Mewtwo is card 150 in the 151 set (2023), a rare Pokémon card with the Psychic type, so it has a purple card frame. In Tall Grass Club you'll find it about 1 in 29 packs when you open free 151 packs.

Every pack has one rare slot, so this card takes a little luck.

Want to know more about the Pokémon? See Mewtwo in the Pokédex.