Mosaic Custodian

Medium celestial, lawful good

20 (+5) 18 (+4) 15 (+2) 16 (+3) 16 (+3) 14 (+2)

Armor Class 21 (natural armor)
Hit Points 78 (12d8 + 24)
Speed 20 ft.
Saving Throws Wisdom +5
Skills Perception +6
Damage Resistances radiant, bludgeoning, piercing, and slashing from nonmagical weapons
Condition Immunities charmed, exhaustion, frightened
Senses darkvision 120 ft., passive Perception 13
Languages all, telepathy to 60 ft.
Challenge 8 (3,900 XP)

Special Traits

  • Angelic Weapons. The mosaic custodian’s weapon attacks are magical. When the custodian hits with any weapon, the weapon deals an extra 2d8 radiant damage (included in the attack).
  • Constructive Field. All objects, items, and structures within 60 feet of a mosaic custodian, including constructs, recover 1 hit point of damage per minute. The mosaic custodian may use a bonus action to turn this effect on or off.
  • Innate Spellcasting. The mosaic custodian’s innate spellcasting ability is Charisma (spell save DC 13). It can innately cast the following spells, requiring no material components.
  • Sense Structural Integrity. As an action the mosaic custodian may determine the hit points, armor class, and damage threshold of any object or structure it sees.
  • Stonecunning. Whenever a mosaic custodian makes an Intelligence (History) check related to the origin of stonework it adds +9 to the roll.


  • Multiattack. The mosaic custodian makes one bite attack and two adamantine hammer attacks.
  • Adamantine Hammer. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 9 (1d8 + 5) bludgeoning damage, or 10 (1d10 + 5) bludgeoning damage if used with two hands to make a melee attack, plus 9 (2d8) radiant damage.
  • Bite. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 8 (1d6 + 5) slashing damage.


The mosaic custodian will very rarely choose to fight. If forced into confrontation, instead of trying to cause harm, it will typically use its abilities to trap and confound enemies.


This creature is a bit shorter than a human, but broader, and is covered with gleaming armored scales. Its face is avian, with a beak-like mouth, and small, intelligent eyes.

Get It Done. Mosaic custodians were made to create order and structure out of inanimate things. They are builders, not warriors, and naturally a great number of them aid mortals in their artistic endeavors. And some have been magically enslaved by evil mortals, who force them to create wondrous architecture and fortifications.

This One is Mine. Every mosaic custodian crafts its own hammer out of adamantine. Other than the material from which it is made this hammer has no special properties, but each one is unique and is part of its owner’s identity. Should a hammer be stolen its owner will stop at nothing to recover it, often recruiting allies to help.

Section 15: Copyright Notice

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