Ameretat, 'Immortality' or 'Deathlessness,' is the Amesha Spenta who governs the plant kingdom and embodies the principle of life that continually regenerates and refuses extinction. Always paired with Haurvatat in the Avestan liturgy (as in Yasht 1.25 and the Siroza), Ameretat represents not static permanence but the ceaseless renewal of creation through Asha's sustaining power. The Bundahishn assigns plants as her material domain, reflecting the Zoroastrian conviction that vegetative regeneration — seeds surviving winter, trees regrowing from stumps — is the visible sign of immortality operating in the getig world. At the Frashokereti, Ameretat's principle triumphs fully: death itself is abolished, and all souls partake of the parahaoma that confers deathlessness.