Servant of the Hand
From Destinypedia, the Destiny wiki
The Servant of the Hand is a level twenty-two Thrall, who, if attacked, will cause an invasion in which The Hand of Crota, a Hive Knight boss will show up, and the only way to stop the waves of Servants and Wizards is to kill The Hand of Crota. The Thrall can only be found in Old Russia, in the area where the player first encounters the Hive, where a flashlight is need for visibility. The Thrall is laying in some garbage to all the way to right from the entrance.
