Ajin (5e Creature)
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Medium aberration, true neutral
Skills Perception +2, Intimidation +3
Amorphous. The ajin can move through a space as narrow as 1 inch wide without squeezing.
Invisibility. The ajin is invisible unless it is about to kill someone and they can sense it with a DC 17 perception check.
Immutable Form. The ajin is immune to any spell or effect that would alter its form.
Black Matter. Attacks from this creature count as magical for the purpose of overcoming resistances and immunities.
Multiattack. The ajin makes two attacks with its claws.
Claws. Melee Weapon Attack: 6 to hit, reach 5 ft., one target. Hit: 18 (2d12 + 5) slashing damage.
Slam. Melee Weapon Attack: 6 to hit, reach 5 ft., one target. Hit: 12 (2d6 + 5) bludgeoning damage. On a hit, the target must roll a DC 15 Constitution saving throw or be Stunned until the end of their next turn.
Paralyzing Scream. (Recharge 5-6) The ajin unleashes a scream that seizes the nervous system. Each creature within 20 feet of the ajin must make a DC 15 Constitution saving throw. On a failure, a creature is paralyzed for 1 minute. A creature can repeat this saving throw at the start of each of its turns, ending the effect on a success.
An Ajin is a creature that cannot be seen or heard by all creatures and humanoids except those that own one. Some owners are able to control their Ajin completely whereas some Ajin simply do whatever it wants. While other Owners are able to command their Ajin properly and can share their Ajin's field of vision and command it to attack targets.Some Ajin are reckless, and often attacks anyone in its immediate vicinity.
These Ajin also seem to have a will of their own and are shown to be quite intelligent. Ajin often mimic the 'core' personality of their owner. Ajin can also mimic their owner's speech. However, there are also cases where Ajin are left to their own will due to their host's negligence to control them or failure to do so. One case included a farmer that left their Ajin to its own will, and it eventually taught itself things such as farming. If left alone for too long, it will be much harder to control them.
When two Ajin's heads make contact, the memories of the Owners that own them also 'collide', resulting in a brief moment where their respective hosts are able to see a memory from the other Owner. During this collision they also trade their mental states such as fear.