Rillaboom

The 2019 SWSH Black Star Promos Rillaboom is a promo Grass-type Pokémon card with 180 HP, evolving from Thwackey. Raw near-mint copies trade around $0.55, while a PSA 10 is modelled near $45.55 and a PSA 9 near $18.55. In its original set it is a chase card — roughly a 1-in-466 booster pull (modelled, not official). Rillaboom has 10 other printings in the catalogue.