Mastersmith is the pinnacle of the Blacksmith's career. The Mastersmith is able to create valuable items from any material they can get hold of. Plus, they have achieved the zenith of craftsmanship and can now upgrade weapons more efficiently. The Mastersmith also specializes in manipulating fire and using various weapons in battle. Another note is that the Mastersmiths with their new skills drains more zeny than their non-rebirth counterpart.