Orthon

Large fiend (devil), Lawful Evil

Armor Class17 (half plate armor)
Hit Points105 (10d10 + 50)
Speed30 ft., climb 30 ft.
STRDEXCONINTWISCHA
22 (+6) 16 (+3) 21 (+5) 15 (+2) 15 (+2) 16 (+3)
Saving ThrowsCon +9, Dex +7, Wis +6
SkillsPerception +10, Stealth +11, Survival +10
Damage Vulnerabilities—
Damage Resistancescold; bludgeoning, piercing, slashing from nonmagical attacks that aren't silvered
Damage Immunitiesfire; poison
Condition Immunitiescharmed; exhaustion; poisoned
Sensesdarkvision 120 ft., truesight 30 ft., passive Perception 20
LanguagesCommon, Infernal, telepathy 120 ft.
Challenge10

Traits

Magic Resistance.

The orthon has advantage on saving throws against spells and other magical effects.

Actions

Infernal Dagger.

Melee Attack Roll: +10 to hit, reach 5 ft., one target. Hit: 11 (2d4 + 6) force damage, and the target must make a DC 17 Constitution saving throw, taking 22 (4d10) poison damage on a failed save, or half as much damage on a successful one. On a failure, the target is poisoned for 1 minute. The poisoned target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Brass Crossbow.

Ranged Attack Roll: +7 to hit, range 100/400 ft., one target. Hit: 14 (2d10 + 3) force damage. The target also suffers one of the following effects of the orthon's choice; the orthon can't use the same effect two rounds in a row:

  • Acid The target must make a DC 17 Constitution saving throw, taking an additional 17 (5d6) acid damage on a failed save, or half as much damage on a successful one.

  • Blindness The target takes 5 (1d10) radiant damage. In addition, the target and all other creatures within 20 feet of it must each make a successful DC 17 Dexterity saving throw or be blinded until the end of the orthon's next turn.

  • Concussion The target and each creature within 20 feet of it must make a DC 17 Constitution saving throw, taking 13 (2d12) thunder damage on a failed save, or half as much damage on a successful one.

  • Entanglement The target must make a successful DC 17 Dexterity saving throw or be restrained for 1 hour by strands of sticky webbing. The target can escape by taking an action to make a DC 17 Strength or Dexterity check and succeeding.

  • Paralysis The target takes 22 (4d10) lightning damage and must make a successful DC 17 Constitution saving throw or be paralyzed for 1 minute. The paralyzed target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

  • Tracking For the next 24 hours, the orthon knows the direction and distance to the target, as long as it's on the same plane of existence. If the target is on a different plane, the orthon knows which one, but not the exact location there.

Reactions

Explosive Retribution.

In response to dropping to 15 hit points or fewer, the orthon explodes. All other creatures within 30 feet of it must each make a DC 17 Dexterity saving throw, taking 9 (2d8) fire damage plus 9 (2d8) thunder damage on a failed save, or half as much damage on a successful one. The orthon, its infernal dagger, and its brass crossbow are destroyed.