snake eating its own tale, uroboros snake in a of circle, endless cycle of life and death, ouroboros ancient

alchemy ancient animal antique attack bite black classic concept cycle cyclical death eating emblem endless esoteric eternity evil forever gnostic good gothic idea infinite infinity insignia life logo logotype magic medieval metaphor occult ouroboros poison predator rebirth reptile revival serpent snake symbol tattoo toxic traditional uroboros vector vintage viper witchcraft