Black iron is a black lusterless malleable metal. It is used by hobgoblins to forge weapons and these creatures are the only ones who know its source, which they will not reveal to anyone. The typical black iron weapon looks to be carved from a single piece of metal. It can be used in any application requiring the use of 'cold iron', including in striking night hags and demons. Black iron weapons, armor, shields, etc. are appropriate for enchantment, and if enchanted they can be used to produce items with a value of up to +2.