Serpent Staff

From Doom Wiki

The Serpent Staff is a weapon from Hexen, the second of four weapons available to the Cleric. It resembles a short, snakeskin-bound staff with a large reptilian eye set into the headpiece. The eye blinks every so often when the weapon is not being fired. The weapon fires twin magical projectiles at a decent rate, and requires Blue Mana to function. When used at close quarters it can suck the life from its target to heal the player. The neck of the weapon has the trident of Neptune on it, the symbol of the Serpent Riders.

The staff is first encountered in the Seven Portals hub.

Hexen weapons
Baratus (Fighter)	Spiked Gauntlets	Timon's Axe	Hammer of Retribution	Quietus
Parias (Cleric)	Mace of Contrition	Serpent Staff	Firestorm	Wraithverge
Daedolon (Mage)	Sapphire Wand	Frost Shards	Arc of Death	Bloodscourge