Uroboros - an ancient Egyptian and Greek symbol of a snake with a tail in its mouth that constantly devours itself and is reborn. It expresses the spiritual and physical unity of all things that will never fade and will endlessly in the form of continuous destruction and rebirth. It is a symbol of infinity, eternal return and unification of opposites (coincidentia oppositorum or coniunctio oppositorum). The snake biting its own tail indicates that the end in the process of eternal repetition corresponds to the beginning.
Dragon - symbols of authority and power, associated with the sun and royal symbolism. It is an allegory of knowledge, wisdom, vigilance and good guard.