vintage style . a coiled ouroboros snake biting its own tail and ancient celtic pattern

snake ouroboros serpent infinity symbol tail circle illustration occult medieval design esoteric eating eternity fantasy isolated vector mythological eye vintage spiritual endless poison monster dragon viking beast nordic norse odin asgard celtic pagan wicca asatru wotan pattern scandinavia valhalla ragnarok jormungand heathen ancient gothic thor europe ornament style north old