Necrotech Reaver

Family: Necrotech

Huge undead, neutral evil

Armor Class 15 (natural armor)
Hit Points 126 (12d12 + 48)
Speed 40 ft.

21 (+5) 7 (–2) 18 (+4) 3 (–4) 8 (–1) 7 (–2)

Damage Immunities poison
Condition Immunities poisoned
Senses darkvision 60 ft., passive Perception 9
Languages understands Common and Darakhul but can’t speak
Challenge 6 (2,300 XP)
Proficiency Bonus +3


  • Siege Monster. The necrotech reaver deals double damage to objects and structures.
  • Undead Nature. The necrotech reaver doesn’t require air, food, drink, or sleep.
  • Unstable Footing. The necrotech reaver has disadvantage on saving throws against being forced prone.


  • Multiattack. The necrotech reaver makes two Chain Lash attacks.
  • Chain Lash. Melee Weapon Attack: +8 to hit, reach 15 ft., one target. Hit: 18 (4d6 + 4) slashing damage, and the target is grappled (escape DC 15). The reaver has four chains, each of which can grapple only one target.
  • Bladed Sweep (Recharge 5–6). The necrotech reaver swings its chains in a wide arc. Each creature within 15 feet of the reaver must make a DC 15 Dexterity saving throw. On a failure, a creature takes 21 (6d6) slashing damage and is forced prone. On a success, a creature takes half the damage and isn’t forced prone. A creature that fails the saving throw by 5 or more is pushed up to 15 feet away from the reaver and forced prone.


Wooden scaffolding holds a patchwork undead together, its top half that of a frost giant and its lower half that of a stone giant. Long, bladed chains hang from its arms and torso.

Necrotech reavers are made from the parts of multiple giants. The gaps between the disparate bodies are bridged with enchanted timber and iron reinforcements, then bladed chains are attached to the creature’s arms and torso. While acquiring the titanic corpses necessary to make a reaver is difficult, the process of stitching them together is relatively simple. Aggressive use of mundane components in the scaffolding and reinforcement allows even neophyte necromancers to participate in their construction and maintenance, while the relative disposability of parts means that a necrotech can be repaired and re-animated as long as dead giants are available as raw material.

Necromantic Vanguard. A necrotech reaver is a specialist necrotech construct deployed in the vanguard of undead armies. Their patchwork construction means that they require regular maintenance or risk falling apart in the heat of battle. Their chains can pull down city walls, rip through buildings, and shred entire formations of soldiers, while their sheer bulk allows them to shrug off blows.

Section 15: Copyright Notice

Tome of Beasts 3 © 2022 Open Design LLC; Authors: Eytan Bernstein, Celeste Conowitch, Benjamin L. Eastman, Robert Fairbanks, Scott Gable, Basheer Ghouse, Richard Green, Jeremy Hochhalter, Jeff Lee, Christopher Lockey, Sarah Madsen, Ben Mcfarland, Jonathan Miley, Kelly Pawlik, Sebastian Rombach, Chelsea Steverson, Brian Suskind, Mike Welham

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