TL;DR: The Blacksmith of Mammon is a roaming NPC tied to the Seven Signs Dawn victory. He unseals A/S-grade gear, adds Special Ability (SA) to weapons, runs augmentation via Life Stones, and swaps A-grade weapons. He teleports between Catacombs and Necropolis zones every few minutes, so his location keeps changing.

Overview

The Blacksmith of Mammon is a roaming NPC blacksmith that offers services you can't get from a standard town blacksmith. He unseals Sealed equipment, adds Special Ability (SA) to weapons, performs augmentation and swaps weapons. He appears on a schedule across different zones and is one of the most important NPCs for endgame gear progression.

Services

ServiceWhat it doesCost
Unseal Sealed gearA- and S-grade armor often drops Sealed and can't be equipped until unsealed.Ancient Adena + Gemstones
Add Special Ability (SA)Adds an SA effect to a B/A/S-grade weapon. You pick an SA from the list available for that specific weapon.Gemstones (matching grade)
AugmentationInserts a magical effect into a weapon. The result is random โ€” from a small stat bonus to a powerful active skill.Life Stone + Gemstones
Remove augmentStrips an existing augment so you can roll the augmentation again.Adena
Weapon exchangeTrades one A-grade weapon for a different A-grade weapon.Ancient Adena (surcharge)

For deeper mechanics, see the SA system and augmentation guides.

Where to Find

The Blacksmith of Mammon appears when the Dawn faction wins the Seven Signs cycle. He teleports between Catacombs and Necropolis zones every few minutes, so his location is never fixed โ€” you have to search for him or track him through server chat. On some servers the schedule and spawn conditions differ, and a few keep a permanent Blacksmith of Mammon in a set town. Check the current server info before you make a special trip.