The Fang uses somber stones, and you need only one stone per level, but each level requires better stones.
For example: for level +1, you need a single somber stone (1); for level +2 you need a single somber stone (2), and so forth up to +9. For +10 you need a somber ancient dragon smithing stone.
Standard smithing stones follow a different path, and you'll need multiple stones to upgrade a weapon. For example, you'll need two smithing stone (1)s to get a weapon to level +2.
For example: for level +1, you need a single somber stone (1); for level +2 you need a single somber stone (2), and so forth up to +9. For +10 you need a somber ancient dragon smithing stone.
Standard smithing stones follow a different path, and you'll need multiple stones to upgrade a weapon. For example, you'll need two smithing stone (1)s to get a weapon to level +2.
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