Trent Tokens
Amulet of the Tinkerer - 2013 (Gold)
The wearer of this necklace is able to affect critical hits on Constructs. It also allows rogues to perform a sneak attack on Constructs. (Constructs have no “vital” areas and are normally immune to critical hits and sneak attack bonuses.)
Text On Token: Negates Construct Critical & Sneak Attack immunities for your attacks
Official True Dungeon Token Database Listing