Made from the branch of a Gulthias tree (see the blights entry of the Monster Manual), a Gulthias staff is a spongy, black length of wood. Its evil makes beasts visibly uncomfortable while within 30 feet of it. The staff has 10 charges and regains 1d6 + 4 of its expended charges daily at dusk.
If the staff is broken or burned to ashes, its wood releases a terrible, inhuman scream that can be heard out to a range of 300 feet. All blights that can hear the scream immediately wither and die.
The staff can be wielded as a magic quarterstaff. On a hit, it deals damage as a normal quarterstaff, and you can expend 1 charge to regain a number of hit points equal to the damage dealt by the weapon. Each time a charge is spent in this manner, red blood oozes from the staff's pores, and you must succeed on a DC 12 Wisdom saving throw or be afflicted with short term madness (see "Madness" in chapter 8 of the Dungeon Master's Guide).
While you are attuned to the staff, you can spend 1 charge to summon a twig blight, 2 charges to summon a needle blight, and 4 charges to summon a vine blight. You may summon up to the amount of blights as 10 charges (eg. 10 twig blights, 5 needle blights, 2 vine blights, or some combination of that as long as the overall amount of charges used is equal to 10). It takes an action to summon a blight and the rest of your turn for the blight to grow out of the wood of the staff. When summoned, the blight appears in a unoccupied spot 5 feet away from you. If no such spot is available, the blight doesn't appear. The amount of charges used to summon blights halved is the amount of charges you regain at dawn. All blights, summoned or otherwise are friendly to you and all those you tell the blights to, otherwise, they will act like blights normally do. They will follow your commands, if none are issued, they will act as normal brights except for the qualities listed above. If you are knocked unconscious, all blights in the vicinity will attempt to protect you and will otherwise do nothing. All blights that you summoned will come to you if you're unconscious to try and protect you. As a bonus action, you can close your eyes and concentrate on the staff to find the location of all blights within a mile radius.
This weapon can be used with one or two hands.
Proficiency with a Quarterstaff allows you to add your proficiency bonus to the attack roll for any attack you make with it.
This weapon has the following mastery property. To use this property, you must have a feature that lets you use it.
Topple. If you hit a creature with this weapon, you can force the creature to make a Constitution saving throw (DC 8 plus the ability modifier used to make the attack roll and your Proficiency Bonus). On a failed save, the creature has the Prone condition.
Notes: Evil or Neutral Alignment, Damage, Combat, Versatile, Topple