Creature Reference Back to Creatures

Oni

Large · Fiend · CR 7 · Lawful Evil

Source. 5e 2024 Rules

17 (natural armor)

119 (14d10 + 42)

Ability Scores

Core attributes and their modifiers.

STR

DEX

CON

INT

WIS

CHA

Overview

Category Monsters

Size Large

Type Fiend

Alignment Lawful Evil

XP 2900

Initiative Bonus +0

Movement

Walk 30 ft (9.1 m)

Fly 30 ft (9.1 m)

Swim 15 ft (4.6 m)

Climb 15 ft (4.6 m)

Crawl 15 ft (4.6 m)

Hover Yes

Senses

Darkvision 60 ft (18.3 m)

Passive Perception 14

Saving Throws

Strength +4 Dexterity +3 Constitution +6 Intelligence +2 Wisdom +4 Charisma +5

Skills

Arcana +5 Deception +8 Perception +4

Languages

Common, Giant

Resistances & Immunities

Damage Resistances

cold

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

Claw

Cost 1

+7 to hit, reach 10 ft (3 m). Hit: 1d12+4 slashing damage.

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

Multiattack

Cost 1

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

Nightmare Ray

Cost 1

+5 to hit, range 60 ft (18.3 m). Hit: 2d6+2 psychic damage.

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

Shape-Shift

Cost 1

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

Cost 1

The oni casts one of the following spells, requiring no Material components and using Charisma as the spellcasting ability (spell save DC 13):

At Will:
1/Day Each: Charm Person, Darkness, Gaseous Form, Sleep

Bonus Actions

Invisibility

The oni casts Invisibility on itself, requiring no spell components and using the same spellcasting ability as Spellcasting.

About Oni

Oni is a large fiend with a Challenge Rating of 7. It has a lawful evil alignment.

In combat, this creature maintains an Armor Class of 17 and possesses 119 hit points (derived from 14d10 + 42).

Oni has communication capabilities including Common, Giant. This allows it to interact verbally with various creatures and characters.

GM Tips: Using Oni

2 tips available

When using Oni in your D&D 5e campaign, consider these tactical approaches:

Flight Control Strategy: Target flying creatures with spells like 'Hold Person', 'Web', or 'Grease' to ground them. Without flight restriction, they can escape melee range easily. Consider area denial spells below their flight altitude to force them into disadvantageous positions.
Regeneration Counterplay: This creature regenerates HP each turn! Players must deal enough damage to overcome regeneration. Certain damage types (acid, fire) may suppress regeneration. Plan sustained damage output.

Player Guide: Facing Oni

2 strategies available

When your party encounters this creature, keep these strategies in mind:

Counter Flight Advantage: This creature can fly! Use ranged attacks, reach weapons, or spells like 'Thunderwave' to push it away. Consider 'Gust of Wind' or 'Earthbind' to ground it. Melee characters need fly speed or flight magic to engage.
Counter Regeneration: This creature regenerates HP each turn! Deal enough damage to overcome regeneration. Use acid or fire damage if it suppresses regeneration. Plan sustained damage output.

Encounter Building Calculator

Standard Party Encounter (4-5 characters):

This creature is a medium encounter for a party of 4 characters of level 7.

Solo Encounter:

A single character of level 10 (up to level 20) can face this creature in a medium to hard encounter.

Experience Point Thresholds:

Medium: 5,600 XP
Hard: 8,400 XP
Deadly: 11,200 XP

Based on D&D 5e Dungeon Master's Guide encounter building guidelines. CR roughly equals party level for medium encounters.

Frequently Asked Questions

What is the challenge rating of Oni?: Oni has a Challenge Rating of 7, making it appropriate for parties of level 7.0.
What type of creature is Oni?: Oni is a Large Fiend, which affects how certain spells and abilities interact with it.
What languages does Oni speak?: Oni can communicate in Common, Giant.