A Servant of the Hand is a unique Thrall that can be found in the Lunar Complex in Old Russia. They appear during the Eris Morn quest The Extermination in The Dark Below. Upon provoking a Servant of the Hand, dozens of Servants, Acolytes, and the Hand of Crota will be summoned to its location to overwhelm whoever disturbs it. Another enemy like this is the Servant of the Eyes.