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Amalgamite Swarm

A scuttling mass of metallic bugs surges forward. These insect-like automatons have sharp pincers and are formed from minute shards and splinters of metal.

Amalgamite Swarm CR 8

XP 4,800
N Tiny construct (swarm)
Init +7; Senses darkvision 60 ft., low-light vision; Perception +16


AC 21, touch 15, flat-footed 18 (+3 Dex, +6 natural, +2 size)
hp 104 (16d10+16); reassemble 8
Fort +7, Ref +10, Will +7
Defensive Abilities dispersion, hardness 10, swarm traits; Immune construct traits


Speed 30 ft., climb 30 ft.
Melee swarm (4d6 plus distraction)
Ranged acid spit +21 ranged touch (2d6 acid)
Space 10 ft.; Reach 0 ft.
Special Attacks distraction (DC 18)


Str 1, Dex 17, Con -, Int 6, Wis 10, Cha 1
Base Atk +16; CMB -; CMD
Feats Following Step, Great Fortitude, Improved Initiative, Iron Will, Lightning Reflexes, Step Up, Toughness
Skills Climb +14, Perception +16, Stealth +14 (+24 when dispersed); Racial Modifiers +10 Stealth when dispersed
Languages Common (can’t speak)
SQ reassemble, scuttling swarm


Acid Spit (Ex)

Each round as a free action, an amalgamite swarm can emit a stream of acid at one target within 10 feet dealing 2d6 acid damage as a ranged touch attack. Amalgamite swarms are immune to this acid. An amalgamite swarm with 0 hit points or less cannot use this ability.

Dispersion (Ex)

As a full-round action, an amalgamite swarm can disperse, spreading itself across a 30-foot cube. While dispersed, it deals no damage and can’t use its other special abilities until it reforms. A dispersed amalgamite swarm can make stealth checks even without cover or concealment or when being directly observed, and when dispersed it gains a +10 bonus on its Stealth checks and does not take increased damage from area effects as normal for being a swarm. Reforming into its normal swarm form takes 1 minute, and while reforming its bonus on Stealth checks is reduced to +5.

Reassemble (Ex)

Damaged components of an amalgamite swarm remain animated and still pose a threat to enemies. These smaller components effectively become a companion swarm of Fine-sized creatures (AC 21, touch 21, flat-footed 18 (+3 Dex, +0 natural armor, +8 size); hardness 0; Immune weapon damage) occupying the same space as the Tiny-sized creatures comprising the swarm, with its own separate set of hit points, referred to as the swarm’s component hit point pool. An amalgamite swarm at full health has 0 hit points in its component pool (which cannot be reduced below 0), and whenever the swarm takes damage from weapons or effects that do not affect an area, its component pool gains the same amount of hit points as those lost by the swarm, and at the start of the swarm’s turn each round thereafter it transfers an amount of hit points equal to half the swarm’s Hit Dice (8 hit points for a typical amalgamite swarm) from its component hit point pool to its normal pool of hit points, similar to fast healing, until all hit points in its component pool have been transferred. Area effects apply their damage to both the swarm’s hit points and to any hit points in its component hit point pool simultaneously. The swarm is destroyed only if its hit points and component pool are both reduced to 0.

Scuttling Swarm (Ex)

An amalgamite swarm can use its Step Up and Following Step feats to move and reshape itself when a creature takes a 5-foot step while within the swarm’s area. Each 5-foot square of the swarm’s area can move up to 10 feet, though all squares of the swarm’s area must remain contiguous and the swarm cannot move into spaces occupied by creatures other than the one that provoked its Step Up feat, unless the creature it is following also occupies that space. Movement taken by the swarm when using these feats does not provoke attacks of opportunity.

Originally forged as a self-replicating tool by a now-extinct race of artificers, these tiny animated machines were subverted by the Hegemony, used to destroy their creators, and then utilized by the Ultari as a weapon of conquest. By itself, each individual amalgamite component has sentience but little more. However, when they bring themselves together to form into insect-like amalgamite units, a hive-like consciousness forms. Amalgamites are inextricably bound to follow their programmed commands but they have the capacity to learn and are often quite cunning in how they follow out their orders.

Amalgamites use their acidic spittle to break down small qualities of common minerals for energy to sustain themselves.

They can also rapidly self repair damaged or broken components, but this requires considerably more energy. The process of creating amalgamites is complex and a closely guarded secret, but amalgamites can replicate by themselves.

This requires qualities of refined metal imbued with significant amounts of magical energy. Due to the potential danger of amalgamites reproducing out of control and destroying their owner’s valuables, amalgamites routinely have strict safeguards integrated into them that limit the total amount of units in a swarm.

Section 15: Copyright Notice

Legendary Planet Adventure Path © 2019, Legendary Games; Authors: Authors: Matt Goodall, Jim Groves, Steven T. Helt, Tim Hitchcock, Jason Nelson, Richard Pett, Tom Phillips, Mike Shel, Neil Spicer, Mike D. Welham.