Keen Smell. The bonedrinker has advantage on Wisdom (Perception) checks that rely on smell.
Undead Fortitude. If damage reduces the bonedrinker to 0 hit points, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless the damage is radiant or from a critical hit. On a success, the bonedrinker drops to 1 hit point instead.
Multiattack. The bonedrinker uses Bonedrink. It then makes four attacks: two with its tentacles, and then two with its claws.
Claw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit:8 (1d6+4) slashing damage.
Tentacle. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 9 (1d10+4) piercing damage and the target is grappled (escape DC 14). Until this grapple ends, the bonedrinker can't use this tentacle to make attacks or grapple another target. The bonedrinker has two tentacles.
Bonedrink. Each creature grappled by the bonedrinker must make a DC 15 Constitution saving throw, on a failed save, the creature takes 16 (3d10) necrotic damage, its Strength score is reduced by 1d4, and the bonedrinker regains 5 hit points. The creature dies if this reduces its Strength to 0, and its skeleton dissolves completely. Otherwise, the reduction lasts until the creature finishes a short or long rest.
Description
The bonedrinker is a truly disgusting creature, first created by hobgoblin wizards who invented the ritual to animate them. Originally, bugbear corpses were used, and later goblins. They are often mistaken for ghasts, but the tentacles that grow from the oozing sores beneath their arms are a giveaway that this is no common undead. The sores constantly grow the longer the creature goes without feeding on bone marrow, evidence of its desperation. The creature attacks by slashing with its claws, then stabbing its tentacles deep into the victims flesh, secreting a necrotic fluid that breaks down bone into a thick liquid, which the bonedrinker then slurps up through its tentacles. Bonedrinkers prey only on creatures with skeletal structures, ignoring all other prey unless attacked. The hungrier they grow, the more savage and desperate they behave. Bone marrow is to the bonedrinker as blood is to a vampire; they cannot live long without it. However, some have been found in ancient tombs and ruins, sealed away for centuries, somehow still animate. Their hunger, in that case, is truly terrible to behold. A bonedrinker stands around 7 feet tall on average and weighs about 225 pounds.
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