CR 7
Large Giant (Outsider)
Armor Class 16 (chain mail)
Hit Points 134
Speed 30 ft., fly 30 ft.
Perception 14 Stealth 13
Immune prone
Sensesdarkvision 60 ft.
Languages Common, Giant

+4 +3 +6 +2 +4 +6

Empowered Weapons. The oni’s weapon attacks are magical. When the oni hits with any weapon, the weapon deals an extra 3d6 force damage (included in the attack).

Giant Attributes. The oni is resistant to the stunned condition.

Regeneration. The oni regains 10 HP at the start of its turn if it has at least 1 HP.


Multiattack. The oni makes two Claw or Glaive attacks, or it makes three Arcane Bolt attacks. It can replace one attack with a use of Spellcasting.

Claw (True Form Only). Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) slashing damage plus 10 (3d6) force damage.

Glaive. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 15 (2d10 + 4) slashing damage, or 9 (1d10 + 4) slashing damage in a Medium or smaller form, plus 10 (3d6) force damage.

Arcane Bolt. Ranged Spell Attack: +6 to hit, range 60 ft., one target. Hit: 17 (4d6 + 3) force damage.

Whirling Glaive (Recharge 5-6). The oni channels its magic into its twirling glaive, creating magical wind in a 30-foot cone. Each creature in the area must make a DC 14 STR save. On a failure, a creature takes 31 (9d6) cold damage and is pushed up to 15 feet away from the oni. On a success, a creature takes half the damage and isn’t pushed.

Spellcasting. The oni casts one of the following spells, requiring no material components and using CHA as the spellcasting ability (spell save DC 14).

Bonus Actions

Change Shape. The oni magically transforms into a Small or Medium Humanoid, a Large ogre, or back into its true form, which is Giant. Its statistics, other than its size, are the same in each form. Any equipment it is wearing or carrying transforms with it, except for its glaive, which adjusts to fit its new form. If the oni dies, it reverts to its true form, and the glaive reverts to its normal size.

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