Blacksmith Artisan

A skilled blacksmith is one of the most valued and useful members of any town. Metal is difficult to extract from the ground, almost as difficult to process, and the ability to repair metal or beat it into a new and useful shape is akin to sorcery. Indeed, the blacksmith’s trade secrets are as closely guarded as any wizard’s tome. A blacksmith is a great help when building your stronghold, but mostly for nails! Many stone fortifications benefit from wooden frames to hoist stones or build scaffolding, and these things need lots of nails. The amount of time a smith actually spends on weapons and armor in a normal village can be close to zero. Of course, a PC’s blacksmith is a different story…
THE SMITHY: Your blacksmith can forge magic arms and armor. Like with the alchemist, this requires the blacksmith to have some knowledge of the nature of magic, but they don’t need to be a wizard, thanks to the incredibly potent arcane power held within a creature’s blood. The smithy allows your blacksmith to craft magic arms and armor 10% cheaper and faster than normal per level of the smithy. What items your smith can forge depends on which organs you bring!
THE BLOOD OF THE BEAST: ARROWS OF SLAYING The alchemy test needed to make arrows of slaying depends on the CR of the monster in question, as described in The Alchemy Test (page 83). The number of arrows you get is also based on the CR of the monster. Very powerful monsters yield only a single arrow. Crafting the arrows requires the services of a 9th-level spellcaster.
THE SWORD WITH BLOOD IN THE BLADE: SLAYING WEAPONS At the lord’s request, the smith can use vials of monster blood to enhance the bonus of a newly forged magical weapon. While crafting a magical weapon with the slashing property, if the blacksmith quenches the blade of the weapon in the blood of a monster, this produces a slaying blade with an extra bonus to damage based on the kind of monster. Crafting the weapon requires the services of a 3rd-level spellcaster. The alchemy test needed to make a slaying weapon depends on the CR of the monster in question, as described in The Alchemy Test. Using the blood of multiple monster types dilutes the formula, giving no bonus against any monster type to the weapon