Transmutation Stations are a type of crafting station that was introduced in Update 16 as part of the Clockwork City DLC. This crafting station has the ability to change an item's trait, for a cost of fifty Transmutation Crystals.
Only one Transmutation Station can be found in the world, at the Hall of Refined Techniques in the Clockwork City's Brass Fortress. However, stations can also be purchased as furnishing items from the Master Writ merchant or from the Crown Store and placed in player houses. As such, players without access to the Clockwork City DLC can still change traits via player housing.