Large celestial, neutral
- Armor Class
- 18 (natural armor)
- Hit Points
- 285 (30d10 + 120)
- Speed
- fly 40 ft. (hover), 0 ft., canHover true ft.
- Challenge
- 17 (18,000 XP)
- Saving Throws
- Dex +11, Int +11
- Skills
- Arcana +11, History +11, Perception +10
- Damage Resistances
- psychic; bludgeoning, piercing, slashing from nonmagical attacks
- Senses
- truesight 120 ft., passive Perception 20
- Languages
- all, telepathy 120 ft.
Actions
The aurumach makes three Manifested Blade or Gleaming Ray attacks.
Melee Weapon Attack: +11 to hit, reach 10 ft., one target. Hit: 23 (4d8 + 5) force damage.
Ranged Spell Attack: +11 to hit, range 120 ft., one target. Hit: 24 (3d12 + 5) force damage.
Bonus Actions
The aurumach manifests a spectral, golden aura of blades around itself. While this aura is manifested, each creature that starts its turn within 10 feet of the aurumach must make a DC 19 Dexterity saving throw, taking 16 (3d10) force damage on a failed save, or half as much damage on a successful one. The aura disappears after 1 minute, when the aurumach has the incapacitated condition or dies, or when the aurumach uses a bonus action to end it.
The aurumach attempts to use its magic to weaken the defenses of a creature it can see within 120 feet of itself. The target must succeed on a DC 19 Wisdom saving throw or become cursed until the end of the aurumach's next turn. The next time the aurumach hits the cursed target with a Manifested Blade or Gleaming Ray attack, the target takes an extra 27 (6d8) force damage.
Spellcasting
The aurumach casts one of the following spells, requiring no material components and using Intelligence as the spellcasting ability (spell save DC 19):