Curious note: An example of this symbology we found it in a famous Germanic epic adventure: The Nibelungs (Das Nibelungenlied), whose hero Siegfried slays the dragon Fafnir - guardian of the treasure of the Nibelungs-, which allows him to become owner of his fortune and to bathe in the blood of this fantastic creature. This transforms Siegfried into an invulnerable being, practically invincible except by one small “weak point” that the treacherous Hagen will know so well to take advantage of to defeat him.