Arcane reforger

Thaumaturge Vashreen.

An arcane reforger was an NPC that offered players reforging, the opportunity to exchange 40 % of a secondary stat on a weapon or armor for another. They were found near the Void Storage and Transmogrification NPCs in Orgrimmar and Stormwind City. You could ask the city guards for directions before their removal.

Arcane reforgers

The Reforging system and associated NPCs have been removed from the game as of Warlords of Draenor.

Former arcane reforgers

Alliance

Location	Arcane Reforger
The Three Winds, Stormwind City	Thaumaturge Vashreen
Craftsmen's Terrace, Darnassus	Aladrel Whitespire
The Great Forge, Ironforge	Erdunor Whitespire
Mage Quarter, Stormwind City	Ithurian Whitespire
The Crystal Hall, the Exodar	Karabrel Moonlance

Horde

Location	Arcane Reforger
The Drag, Orgrimmar	Thaumaturge Zajir
The Apothecarium, Undercity	Archmage Pratt
Godan's Runeworks, the Drag, Orgrimmar	Enchanter Farendin
Court of the Sun, Silvermoon City	Enchantress Fira
Middle rise, Thunder Bluff	Enchantress Herim

Neutral

Location	Arcane Reforger
Grand Expedition Yak	Mystic Birdhat
Magus Commerce Exchange, Dalaran	Archmage Aranhir Starsinger

Patch changes

• Patch 6.0.2 (2014-10-14): The Reforging system and associated NPCs have been removed from the game or had their title removed.
  
• Patch 4.3.0 (2011-11-29): Previous vendors retired, new ones added near Void Storage and Transmogrification vendors.
  
• Patch 4.0.3a (2010-11-23): Changed into individual people instead of a generic night elf model.
  
• Patch 4.0.1 (2010-10-12): Added.