Death Drinker (5e Creature)
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Medium undead, neutral evil
Innate Spellcasting. The death drinker's innate spellcasting ability is Charisma (spell save DC 13, +5 to hit with spell attacks). It can innately cast the following spells, requiring no material components:
Multiattack. The death drinker makes two attacks.
Longsword. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) slashing damage, or 8 (1d10 + 3) slashing damage if used in two hands.
Touch. Melee Spell Attack: +5 to hit, reach 5 ft., one creature. Hit: 10 (2d6 + 3) necrotic damage.
Amid the shifting sands of the desert, a voice is heard, begging for something to drink. This voice might belong to a hapless traveller, but sometimes, the cause is far more sinister: a death drinker. Death drinkers are undead that can only be created from humanoids that died of thirst and have desiccated appearances. They constantly feel thirsty, but the only relief they can find from this thirst is blood, though they prefer the blood of sentient creatures, especially humanoids.
Dastardly Thirst. As undead beings, death drinkers do not need to drink, but the constant torment of thirst is like daggers in the throat of a death drinker. However, no matter how much they drink, they always succumb to thirst. Death drinkers can be found almost anywhere, though they are particularly common in deserts. Some particularly vile spellcasters deliberately take prisoners and deprive them of water for the sole purpose of transforming them into death drinkers, whilst others scour the deserts looking for the bodies of those that died of thirst.
Undead Nature. A death drinker doesn't require air, food, drink, or sleep.