Large elemental, neutral

Armor Class 16 (natural armor), 21 with Metallic Carapace
Hit Points 180 (19d10 + 76)
Speed 30 ft., burrow 25 ft.

21 (+5) 14 (+2) 18 (+4) 6 (-2) 11 (+0) 6 (-2)

Damage Vulnerabilities bludgeoning
Damage Immunities poison
Condition Immunities paralyzed, poisoned, unconscious
Senses darkvision 60 ft., passive Perception 10
Languages Terran
Challenge 10 (5,900 XP)
Proficiency Bonus +4


  • Aura of Magnetism. While within 60 feet of the ferropaceon, a creature using a metal weapon or ammunition makes attack rolls with advantage against the ferropaceon and with disadvantage against creatures other than the ferropaceon.
  • Earth Glide. The ferropaceon can burrow through nonmagical, unworked earth and stone. While doing so, it doesn’t disturb the material it moves through.
  • Metal Sense. The ferropaceon can magically pinpoint the location of metal within 60 feet of it.
  • Metallic Carapace. The ferropaceon can protect itself by covering itself in magnetized metal objects, creating a metallic shell around its body. While the ferropaceon’s metallic carapace contains at least 50 pounds of metallic objects, the ferropaceon’s Armor Class is 21 instead of 16. A creature within 5 feet of the ferropaceon can use an action to make a DC 15 Strength check. On a success, the creature can remove one object from the metallic carapace. Removing three objects destroys the ferropaceon’s Metallic Carapace until the ferropaceon uses Hyperpolarization.


  • Multiattack. The ferropaceon attacks three times with its scissor claws. It can replace one attack with Hyperpolarization.
  • Scissor Claws. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 16 (2d10 + 5) slashing damage.
  • Hyperpolarization (Recharge 5-6). The ferropaceon temporarily intensifies its magnetic field. All Medium and smaller unattended metal objects within 60 feet are pulled 60 feet towards the ferropaceon and added to its Metallic Carapace. Each creature within 60 feet wielding a metal object must make a DC 17 Strength saving throw. On a failure, the creature is disarmed and the metal object is pulled to the ferropaceon and added to its carapace. Each creature within 60 feet wearing metal armor must succeed on a DC 17 Strength saving throw or be pulled 10 feet straight towards the ferropaceon.
  • Repulsive Barrage. If the ferropaceon’s Metallic Carapace contains at least 50 pounds of metal, the ferropaceon violently reverses its magnetic field. Metal objects stuck to its body are flung outwards, destroying the Metallic Carapace. Each creature within 30 feet of the ferropaceon must make a DC 16 Constitution saving throw, taking 35 (10d6) slashing damage on a failed save, or half as much damage on a successful one.


Often likened to a hermit crab, the ferropaceon is a six-legged earth elemental with a naturally smooth magnetic shell upon which it single-mindedly hoards any magnetic materials it can find. Though they hail from the Elemental Plane of Earth and tend to emerge on the Material Plane within the cavernous depths of ore-rich mountains, ferropaceons inevitably wander toward humanoid lands in search of ever more and ever rarer metal objects. Junkyards, old battlefields, and the outskirts of highly industrial cities have all known a ferropaceon at one time or another.

Though not malicious, ferropaceons are highly territorial, viewing any object magnetically stuck to their body as rightly theirs. Most ferropaceons defend their treasures with scissor-like claws that can slice through flesh and bone with ease.

The oldest ferropaceons can control their magnetic fields to such a degree that they can wield metallic weapons like swords and hammers, oscillating their magnetism so that the weapon hovers around them and strikes at their command.

The first fungal raptors were created by a vampiric druid obsessed with the cycle of rot, decay, and rebirth (particularly the rot and decay parts). Since then, fungal raptors have spread throughout the known world utilizing sporal reproduction. Many woodstraipsing adventurers have unknowingly been sprinkled with the spores of a fungal raptor hiding in the trees above, only to carry the raptor’s progeny far and wide.

Section 15: Copyright Notice

Battlezoo Bestiary (5E) © 2022, Skyscraper Studios, Inc.; Authors: William Fischer, Stephen Glicker, Paul Hughes, Patrick Renie, Sen.H.H.S., and Mark Seifter.

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