Adamant Diligence

The manifestation of an adamant diligence is an unmissable event. It appears as a heavenly storm, thick clouds dappled with radiant light. From within, a huge, shimmering orb projects blasts of devastating power over immense distances. The diligence sees all and tolerates no trespass. These creatures are snipers and assassins of the highest caliber, laying out even the most evasive enemies with unearthly precision. The appearance of an adamant diligence is a calamity of epic proportions, for few are virtuous enough to avoid its gaze.


Huge celestial, neutral good

Armor Class 23 (natural armor)
Hit Points 406 (28d12 + 224)
Speed 0 ft., fly 90 ft. (hover)

14 (+2) 30 (+10) 26 (+8) 20 (+5) 25 (+7) 22 (+6)

Saving Throws Str +10, Con +16, Wis +15, Cha +14
Skills Insight +23, Perception +23, Stealth +26
Damage Resistances necrotic; bludgeoning, piercing, and slashing from nonmagical attacks
Damage Immunities radiant
Condition Immunities charmed, exhaustion, frightened, prone, stunned, unconscious
Senses truesight 1 mile, passive Perception 33
Languages all
Challenge 28 (120,000 XP)


Cloud Cover. As a bonus action, the diligence surrounds itself with thick clouds that completely fill a 30-foot-radius sphere. The sphere spreads around corners, and its area is heavily obscured for creatures other than the diligence and its allies. The cloud does not move with the diligence, but the diligence can re-center the cloud on itself as a bonus action. The cloud lasts until the diligence dismisses it with another bonus action or it creates a second cloud using this feature.

Find the Center. On each of its turns, if the diligence does not move from its space or take any actions other than its Heavenly Snipe attack, it deals an additional 90 (20d8) radiant damage on a successful hit with that attack.

Penetrating Shots. When the diligence makes a successful ranged weapon attack and exceeds the target’s AC by 10 or more, the projectile pierces through the target and continues onward in a straight line away from the diligence. If the projectile encounters another creature or object along its path, that creature or object becomes a target of the attack as well (as though the diligence had made the original attack against it). If the projectile encounters a magical effect or spell that would stop it, the projectile is destroyed and the spell or magical effect ends.

Unerring Precision. The diligence’s weapon attacks are magical. Additionally, the diligence has advantage on ranged attacks and its ranged attacks ignore half cover and three-quarters cover.

Virtuous Vigilance. The diligence has advantage on saving throws and ability checks against creatures with a lower Wisdom score than it.


Multiattack. The diligence makes four Star Shot attacks, or it makes two Star Shot attacks and takes the Ready action to ready a Heavenly Snipe to use against the first enemy that moves that it can see.

Dispersion. Until the end of its next turn, the diligence expands the radius of its Cloud Cover feature to 120 feet. Additionally, the diligence immediately magically teleports to an unoccupied space within the affected area.

Heavenly Snipe. Ranged Weapon Attack: +18 to hit, unlimited range, one target. Hit: 65 (10d10 + 10) piercing damage and 55 (10d10) force damage.

Star Shot. Ranged Weapon Attack: +18 to hit, range 500 ft., one target. Hit: 43 (6d10 +10) piercing damage.

Ref: TPKB1 p226