Large aberration, neutral evil

Armor Class 14 (natural armor)
Hit Points 102 (12d10 + 36)
Speed 20 ft.

18 (+4) 13 (+1) 17 (+3) 10 (+0) 12 (+1) 13 (+1)

Skills Athletics +8, Perception +5, Stealth +3
Senses darkvision 90 ft., passive Perception 15
Languages Aklo
Challenge 4 (1,100 XP)


  • All Around Vision. A bonesucker sees in all directions at once. It cannot be flanked.
  • Liquefy Bones. If a target is grappled by the bonesucker at the start of the bonesucker’s turn, as a bonus action, the target’s Strength score is reduced by 1d4. The target dies if this reduces its Strength score to zero. Otherwise, the reduction lasts until the target finishes a long rest or lesser restoration or better is used on the target.
  • Magic Weapons. The bonesucker’s weapon attacks are magical.


  • Multiattack. The bonesucker makes four Tentacles attacks.
  • Tentacles. Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 14 (4d4 + 4) bludgeoning damage. The target is grappled (escape DC 14) if the bonesucker isn’t already grappling a creature, and the target is restrained until the grapple ends.


A bonesucker resembles a fleshy, 10-foot-tall tree trunk. Atop its main body protrudes a mass of writhing tentacles that constantly ooze and drip a brownish-yellow fluid. A ring of black, unblinking eyes is near the top of its body. This bizarre creature stalks the darkness of wastelands and dank caves. The body is encased in a thick, rubbery sheath of flesh and muscle that makes the bonesucker highly resistant to injury. The bonesucker moves about using five thick tentacles at its base.

Bonesuckers consume only the bones of an opponent by grabbing it and piercing its flesh with its hollow tentacles. The tentacles inject digestive enzymes into the bones, which break down and are sucked up as a pasty meal for the bonesucker. Experienced adventurers always know when they are near the hunting grounds of a bonesucker as the creature leaves boneless carcasses of past meals lying about.

A bonesucker attacks with its tentacles. Initially, the tentacles appear to be only a foot or two in length, but the bonesucker can extend them to a length of approximately 10 feet. It can attack with up to four of its eight tentacles in a single round. A bonesucker’s natural weapons are treated as magic weapons for the purpose of overcoming damage reduction.

Section 15: Copyright Notice

Rappan Athuk © 2018, Frog God Games, LLC; Authors Bill Webb, Clark Peterson, Skeeter Green, Tom Knauss, Lance Hawvermale, WDB Kenower, Casey Christofferson, and Greg Raglund; based on the original creation of Bill Webb.

Tome of Horrors 2020, (C) 2020, Necromancer Games

This is not the complete section 15 entry - see the full license for this page