Blacksteel

Rare Metal, Rare (500 gp per ingot)

After Blackstreet ran red with molten coal over the brass conduits in the street, the Atroxians discovered a new form of arcane metal: Blacksteel. Items forged from blacksteel take on a dull-looking gray hue with sharp white edges.

Blacksteel Armor

Magic Armor. You have a +2 bonus to your armor class while wearing this armor.

Blacksteel. When you’re hit by an attack while you’re wearing this armor, any acid, cold, fire, lightning and thunder damage dealt to you by that attack is reduced by an amount equal to your proficiency bonus.

Blacksteel Weapon

Magic Weapon. You have a +2 bonus to attack and damage rolls made with this magic weapon.

Blacksteel. If you hit a creature with a Blacksteel weapon and that creature is immune to the weapon’s damage, it is treated as having resistance to the damage instead.