What are the supernatural properties of iron?

Question

i know that i read somewhere iron has supernatural properties but i cant remember them

Answer 1

Magnetism was once regarded as supernatural.

Answer 2

Iron, like running bodies of water, has a repelling and

interrupting affect on magic. Magickal creatures avoid

it, and the elven cannot be around it, it can be painful

to them.

Answer 3

iron is also sacred to the greek god of war Ares (or Mars in romon mythology) and wearing a piece of it can bring strength and courage especially with conflict.