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 animal eternity fantasy isolated mythology white vector biting mythological vintage spiritual endless monster hermeticism dragon viking nordic norse odin asgard celtic pagan wicca pattern scandinavia valhalla ragnarok jormungand heathen ancient gothic thor europe ornament style runes north world