Nagdu (5e)

Medium Humanoid Parasite, Neutral Evil
Armor Class 14
Hit Points 24 (2d8 +9)
Speed 30 ft.

STR 2(-4)
DEX 15(+2)
CON 16(+3)
INT 13(+4)
WIS 10(+0)
CHA 3(-4)

Skills Perception +3
Senses Passive Perception 13, Darkvision 90 ft.
Languages Any LanguageĀ 
Challenge 1/2 (300XP)

Latch. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: (1d6) piercing damage. The target must make a DC 20 Strength saving throw or continue to take (1d6) damage as the Nagdu drains the target of its blood. 

Nagdu are a race of humanoid parasites that live off the blood of warm-blooded creatures. In their natural form, these monsters have bulbous bodies covered with many layers of folded flab and thick, slimy skin. Their eyes are empty sockets, and their mouths are elongated snouts surrounded by curved teeth and ending in a sucker-like appendage. Their hands and feet are undeveloped, with only a few fingers and toes.

Nagdu have the ability to mutate themselves into humanoid races ranging between three to seven feet in height. In addition to changing forms, Nagdu can speak any language and lie without being detected. Lastly, these monsters have darkvision with a 90-foot range.

In their natural form, these creatures lack opposable fingers and cannot wield weapons or employ shields. Instead, they attack by latching hold of prey with their sucker-like maws. If an attack is successful, the beast automatically inflicts 1d6 damage each combat turn. Because of its hook-like teeth, the player must succeed a DC 20 Strength saving throw or be grapple, taking 1d6 damage each time they do no successfully get out of its grasp.

While in mutated form, a Nagdu can handle any weapon and inflict standard weapon damage. In addition, they can wear armor and carry shields and often do so to keep up appearances. However, while employing armor, Nagdu cannot mutate because of the armor’s constrictive nature.

Despite their appearance, these monsters are cowardly and do not attack if they think they will be killed. Furthermore, even while draining blood from a victim, they will detach themselves and flee if rescuers draw too near.

Nagdu are encountered in almost every climate and terrain save the coldest. Their diet consists of blood, which they can steal from any warm-blooded creature, but they prefer the blood of humans and elves. Because of this predilection, Nagdu use their mutation ability to infiltrate populated frontier communities.