Tarnhelm is a magic helmet in Richard Wagner's Der Ring des Nibelungen (written 1848–1874). It was crafted by Mime at the demand of his brother Alberich. It is used as a cloak of invisibility by Alberich in Das Rheingold. It also allows one to change one's form.
https://en.wikipedia.org/wiki/Tarnhelm
Sculpted for https://cgboost.com/sculptjanuary2021/, decimated.
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