Age of Heroes
Steel weapons are functionally +1 Magic weapons.
Steel armor is functionally Adamantine Armor (DMG).
Additionally, some equipment is not available except through special circumstances; most are not yet in use. If your character would get proficiency in any of the following weapons, you may instead choose any other weapon in the same category. Additionally, if your character would receive proficiency in heavy armor, you may instead choose a feat or save proficiency. You can’t take Heavy Armor as a feat, only to get a free feat.