古代の咆哮 is a Pokémon expansion with set code ja-sv4k. The Trademeup catalog tracks 97 cards from this set. Release date: Oct 27, 2023. Singles from this set currently range from €0.03 to €38.02. The most expensive card tracked right now is トドロクツキex at €38.02. Expansions released around the same time: 未来の一閃 and Paradox Rift.
