Vampire

Contrary to popular belief, monsters are not all alike. Like people, individual members of the same species can each have their own unique traits, preferences and weaknesses. A good example of this is the many species of vampires, some very different from the others, and only connected by their mandatory diet: fresh blood. Vampires are often referred as of the lower or higher variant. There seem to be some disagreement in the academic world as to what makes a vampire belong to either category. Most scholar qualifies a vampire of higher ascendancy when they show the ability to shapechange into a humanoid, but other base their assumption on their intelligence and capacity to use magical abilities. Other deny entirely the aforementioned classifications and state that higher vampires are an entirely different species, immortal and human looking.

Blood Addiction

When a vampire loses control of itself because of its Blood Addiction weakness the vampire enters a state called blood frenzy. In order to control itself near a source of blood, the vampire must make a DC 15 Wisdom saving throw, on a failed save it loses control and enters blood frenzy. The blood frenzy ends when the vampire use its bite attack successfully and inflicts necrotic damage to a target, unless noted otherwise in its individual description. If a vampire's saving throw is successful or the effect ends for it, the vampire is immune to the blood frenzy for the next 24 hours. While under the blood frenzy the vampire gains the following:

• The vampire shapeshifts back to its vampire form and cannot use its shapechanger feature until the frenzy ends.
• The vampire has advantage on melee weapon attack rolls, but attack rolls against it have advantage until the frenzy ends.
• The vampire cannot use its Innate Spellcasting or Spellcasting feature until the frenzy ends.
• The vampire becomes immune to the charmed and frightened condition until the frenzy ends.

Varghulf

Embrace the Curse

Much like a vargheist, a varghulf is created when a vampire simply allows the animalistic urge to overcome them, and in the process, destroy all that was left of their former personality. However, varghulf were once powerful lords of the night that did so willingly, embracing absolutely the curse of vampirism. These feral predators abandon their dark castles in order to run unfettered through the forest. Those who revel in such behavior become physically changed beyond recognition by the vampiric curse.

Insatiable Thirst

Over the centuries, these devolved vampires become blood-mad killers that exist only to feed. Like enraged, starved beasts, they run rampant, devouring whole villages in an effort to satiate their never-ending thirst. To hunger eternally and feed is the only thing that rhythm the nights of a varghulf, a curse eternity that few sentient vampires would wish. Most would rather meet their final death than to become a constantly blood craving varghulf. Varghulf do not stop their rampage to mortals, for nothing is safe from their hunger: giants, dragons and even other vampires will do just as well.