
Puzzling out how to upgrade weapons in Elden Ring Nightreign is a little confusing, especially as its Smithing Stones work a little differently to how they did in the original game. You'll still have to track down this blacksmithing material, but you'll only need one of each kind to upgrade a weapon. Each armament also has a rarity now, which changes what stone you need to use.
Besides the materials, you'll also need to find an anvil out in Limveld, and all the while you're doing this, night is closing in and you're frantically trying to gather as many runes as you can—it's a lot of admin to be honest. So here are the best Smithing Stone locations in Elden Ring Nightreign, plus how the whole weapon upgrade system works.