Halted Gait. If the Cauldron Born is hit, regardless of damage, it's movement speed is immediately halved until it has completed it's current or following turn.
Mundane Resistance. The Cauldron-Born were invulnerable to all mundane weapons. A sword buried in their breast would produce only a brief halt to the deathless warrior's advance; the wound was bloodless and did no damage to the wounded Cauldron-Born.
Undead Fortitude. If damage reduces the Cauldron Born to 0 hit points, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless the damage is radiant or from a critical hit. On a success, the Cauldron Born drops to 1 hit point instead.
Turn Resistance. If another Cauldron Born is within 15 feet it has advantage on saving throws against any effect that turns undead due to a shared directive. If a leader of the Cauldron Born is present it can use an action to re-establish their shared directive and turn them back.
Battle Axe. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 5 (1d8 + 2) slashing damage.
Shortbow. Ranged Weapon Attack: +4 to hit, range 80/320 ft., one target. Hit: 5 (1d6 + 2) piercing damage.
Description
These deathless warriors had "livid" or "pallid" features and "lightless eyes" like stones. Their mouths were "frozen in the hideous grin of death". They wore studded breastplates, heavy belts, and wielded axes and bows. These warriors were mute, emanating a "ghostly silence", and felt no pain. In the act of their unnatural resurrection, all memory of their former selves was destroyed; they could only fulfill their master's commands, and to bring others into death's cold bondage.