The Energy Dagger is an energy meleeweapon employed by the Sangheili, particularly the Zealot classes, during the Human-Covenant war. It is mainly used for assassinations by player-controlled Elites. Other uses include hostage killing and door hacking.
The design bears resemblance to a half-sized Energy Sword, but ends in a single point rather than in dual prongs. It is mounted to a device worn on the wrists of the user.