The mythical creature believed to grant immortality is often the Elixir of Life, symbolized by beings like the Griffin or the Taoist Pill of Immortality. In various mythologies, these creatures or elixirs possess the power to confer eternal life or rejuvenation. This theme reflects humanity's deep desire for longevity and the quest for immortality. The search for such beings reveals cultural values around life, death, and transcendence, showcasing how societies grapple with the inevitability of mortality.