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Monster · SRD 5.2.1

Oni

Large fiend, lawful evil

Armor Class
17
Hit Points
119 (14d10)
Speed
fly 30 ft. (hover), 30 ft.
STR
19 (+4)
DEX
11 (+0)
CON
16 (+3)
INT
14 (+2)
WIS
12 (+1)
CHA
15 (+2)
Senses
darkvision 60 ft., passive perception 14
Languages
Common, Giant
Challenge
7 (2,900 XP)

Traits

Regeneration. The oni regains 10 Hit Points at the start of each of its turns if it has at least 1 Hit Point.

Actions

Multiattack. The oni makes two Claw or Nightmare Ray attacks. It can replace one attack with a use of Spellcasting.

Claw. Melee Attack Roll: +7, reach 10 ft. Hit: 10 (1d12 + 4) Slashing damage plus 9 (2d8) Necrotic damage.

Nightmare Ray. Ranged Attack Roll: +5, range 60 ft. Hit: 9 (2d6 + 2) Psychic damage, and the target has the Frightened condition until the start of the oni's next turn.

Shape-Shift. The oni shape-shifts into a Small or Medium Humanoid or a Large Giant, or it returns to its true form. Other than its size, its game statistics are the same in each form. Any equipment it is wearing or carrying isn't transformed.

Spellcasting. The oni casts one of the following spells, requiring no Material components and using Charisma as the spellcasting ability (spell save DC 13): 1/Day Each: Charm Person (level 2 version), Darkness, Gaseous Form, Sleep

Large fiend, lawful evil

Special Abilities

Regeneration

The oni regains 10 Hit Points at the start of each of its turns if it has at least 1 Hit Point.

Actions

Multiattack

The oni makes two Claw or Nightmare Ray attacks. It can replace one attack with a use of Spellcasting.

Claw

Melee Attack Roll: +7, reach 10 ft. Hit: 10 (1d12 + 4) Slashing damage plus 9 (2d8) Necrotic damage.

Nightmare Ray

Ranged Attack Roll: +5, range 60 ft. Hit: 9 (2d6 + 2) Psychic damage, and the target has the Frightened condition until the start of the oni's next turn.

Shape-Shift

The oni shape-shifts into a Small or Medium Humanoid or a Large Giant, or it returns to its true form. Other than its size, its game statistics are the same in each form. Any equipment it is wearing or carrying isn't transformed.

Spellcasting

The oni casts one of the following spells, requiring no Material components and using Charisma as the spellcasting ability (spell save DC 13): 1/Day Each: Charm Person (level 2 version), Darkness, Gaseous Form, Sleep

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This work includes material from the System Reference Document 5.2.1 (“SRD 5.2.1”) by Wizards of the Coast LLC, available at https://www.dndbeyond.com/srd. The SRD 5.2.1 is licensed under the Creative Commons Attribution 4.0 International License, available at https://creativecommons.org/licenses/by/4.0/legalcode.

Reformatted and reorganized for presentation on PostRoll; text unmodified.

Licensed under Creative Commons Attribution 4.0 International.

srd-5.2.1 · Version 1.0.0 · Updated Jul 9, 2026