Rust-Mite Swarm - AI-generated fantasy Monster

Rust-Mite Swarm

Legend speaks of a chronomancer whose workshop was swallowed by a forest. His tiny automated cleaners, left without a master, evolved to feed on the passage of time itself, accelerating the age of everything they touch to scavenge the remains.

MediumConstruct(Swarm)CR 4Unaligned

Rust-Mite Swarm

swarmmechanicaltemporal
HP52AC14SPD30 ft fly (hover), 30 ft walkCR4PerceptionStealth
STR
8
DEX
16
save
CON
14
INT
1
WIS
10
CHA
1
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 hit points or gain temporary hit points.
Temporal Resonance. Any creature starting its turn in the swarm's space must succeed on a Wisdom saving throw or be under the effects of the Slow spell until the start of its next turn.
Metal Sense. The swarm can pinpoint the location of any metallic object within 60 feet.
Entropic Bites. Melee Weapon Attack: to hit, reach 0 ft, one target in the swarm's space. Hit: 14 () piercing damage, or 7 () piercing damage if the swarm has half of its hit points or fewer. If the target is wearing armor or carrying a shield made of metal, the item takes a permanent and cumulative -1 penalty to the AC it offers. Armor reduced to an AC of 10 or a shield that drops to a bonus is destroyed. If the target is carrying a metal weapon, it takes a permanent -1 penalty to damage rolls. A weapon reduced to a -5 penalty is destroyed.
Accelerated Decay (Recharge 5-6). The swarm vibrates violently. Each metallic object within the swarm's space ages 100 years in a second. One non-magical metal object of the swarm's choice (such as a weapon or a suit of armor) is immediately destroyed. If the object is being worn or carried, the creature must succeed on a Dexterity saving throw to pull the object away, taking only the Entropic Bite penalty on a failure instead of total destruction.
Temporal Flicker. When the swarm would take damage from a melee attack, it can use its reaction to flicker forward in time, gaining a bonus to AC against that attack.
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