Heart of Hades (黄泉の心臓 Yomi no Shinzō) is a Precious with the power to resurrect the dead and imbue them with limitless power. The last surviving Jaryuu obtained the Precious and used it to revive Creator King Ryuuwon, with the Gokaigers taking the item and giving it to Satoru. Ep. 21: The Adventurer Heart