Swarm, Manabane Scarabs

Family: Insects Rodents & Vermin

Medium swarm of Tiny beasts, unaligned

Armor Class 15 (natural armor)
Hit Points 82 (11d8 + 33)
Speed 20 ft., burrow 10 ft., climb 20 ft., fly 10 ft.

3 (-4) 16 (+3) 16 (+3) 1 (-5) 13 (+1) 2 (-4)

Skills Perception +3, Stealth +5
Damage Resistances bludgeoning, piercing, slashing
Condition Immunities charmed, frightened, grappled, paralyzed, petrified, prone, restrained, stunned
Senses blindsight 10 ft., darkvision 30 ft., tremorsense 30 ft., passive Perception 13
Challenge 4 (1,100 XP)
Proficiency Bonus +2


  • Limited Magic Immunity. The swarm of manabane scarabs can’t be affected or detected by spells of 2nd level or lower unless it wishes to be. It has advantage on saving throws against all other spells and magical effects.
  • Sense Magic. The swarm of manabane scarabs senses magic within 120 feet of it at will. This trait otherwise works like the detect magic spell but isn’t itself magical.
  • Swarm. The swarm can occupy another creature’s space and vice versa, and the swarm can move through any opening large enough for a Tiny insect. The swarm can’t regain hp or gain temporary hp.


  • Bites. Melee Weapon Attack: +5 to hit, reach 0 ft., one creature in the swarm’s space. Hit: 28 (8d6) piercing damage, or 14 (4d6) piercing damage if the swarm has half of its hit points or fewer, and the swarm can attempt to end one random magical effect of 2nd level or lower on the target. This effect works like the dispel magic spell, except the swarm must always make an ability check. Its ability check for this is +5.


  • Drain Magic Item. The swarm drains the magic from one magic item in its space that isn’t being worn or carried. A magic item with charges loses 1d4 charges, an item with limited uses per day loses one daily use, and a single-use item, such as a potion or spell scroll is destroyed. All other magic items have their effects suppressed for 1 minute. A drained item regains its magic after 1 hour.


These clicking, turquoise-colored beetles have faintly luminescent golden glyphs on their backs, which grow brighter as they slowly draw near.

Manabane scarabs are vermin infused with the ancient magic of fallen desert empires.

Devour Magic. Whether from gnawing on the flesh of the undead or nesting in areas rife with lingering enchantment, these beetles have developed a taste for the power of magic even as its power has marked them. The graven glyphs on their carapaces resemble the priestly cuneiform of long-dead kingdoms, and the more magical energy they consume, the brighter they glow. Manabane scarabs pursue magic without hesitation or fear, tirelessly seeking to drain it for sustenance.

Section 15: Copyright Notice

Tome of Beasts 1 ©2023 Open Design LLC; Authors: Daniel Kahn, Jeff Lee, and Mike Welham.

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