text: In Welsh mythology, Lludd Llaw Ereint had a hand made of this substance, as did his Irish counterpart Nuada.
full_question: In Welsh mythology, Lludd Llaw Ereint had a hand made of this substance, as did his Irish counterpart Nuada. In one myth story, Ophion wrapped himself around an object of this material and Baba Yaga uses a broom made of this substance. For ten points, name this substance that supposedly, if fashioned into a bullet could kill a werewolf or Ralph Nader
first_sentence: In Welsh mythology, Lludd Llaw Ereint had a hand made of this substance, as did his Irish counterpart Nuada.