Enchanted Chain (5e Creature)
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Small construct, unaligned
Saving Throws Dex +5
Antimagic Susceptibility. The chain is incapacitated while in the area of an antimagic field. If targeted by dispel magic, the chain must succeed on a Constitution saving throw against the caster's spell save DC or fall unconscious for 1 minute.
Damage Transfer. While it is wrapped around a creature, the chain takes only half the damage dealt to it, and the wrapped creature takes the other half.
False Appearance. While the chain remains motionless and isn't flying, it is indistinguishable from a normal chain.
Chain. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 3) bludgeoning damage and the chain wraps around the target. While wrapped around the target, the chain can attack no other creature except the target but has advantage on its attack rolls. The chain's speed also becomes 0, it can't benefit from any bonus to speed, and it moves with the target.
An enchanted chain can typically be found guarding prisons, shipyards or warehouses. They might be embellished with manacles or spikes. Some are programmed to crush their victims until dead. Others squeeze until the prisoner passes out, restraining them until the chain's owner attends the scene.