Mythical substances are materials often found in folklore and mythology, believed to possess extraordinary properties or powers. Examples include philosopher's stone, which is said to turn base metals into gold and grant immortality, and manna, a miraculous food mentioned in religious texts that sustained people in the wilderness. These substances often symbolize human desires, such as the quest for eternal life or ultimate knowledge. They appear in various cultures, reflecting shared themes of transformation and the search for the unattainable. Other notable examples include elixir of life and ambrosia, both associated with immortality and divine favor.