Demogorgon

If Demogorgon fails a saving throw, he can choose to succeed instead.

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

Demogorgon has advantage on saving throws against being Blinded, Deafened, Stunned, or knocked Unconscious.

Demogorgon makes two Tentacle attacks. He can replace one attack with a use of Gaze.

Melee Weapon Attack +17 to hit, reach 10 ft., one target. 28 (3d12 + 9) Force damage. If the target is a creature, it must succeed on a DC 23 Constitution saving throw, or its hit point maximum is reduced by an amount equal to the damage taken. This reduction lasts until the target finishes a long rest. The target dies if its hit point maximum is reduced to 0.

Demogorgon turns his magical gaze toward one creature he can see within 120 feet of him. The target must succeed on a DC 23 Wisdom saving throw or suffer one of the following effects (choose one or roll a d6):
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1–2: Beguiling Gaze
The target is Stunned until the start of Demogorgon's next turn or until Demogorgon is no longer within line of sight.
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3–4: Confusing Gaze
The target suffers the effect of the Confusion spell without making a saving throw. The effect lasts until the start of Demogorgon's next turn. Demogorgon doesn't need to concentrate on the spell.
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5–6: Hypnotic Gaze
The target is Charmed by Demogorgon until the start of Demogorgon's next turn. Demogorgon chooses how the Charmed target uses its action, reaction, and movement.

Demogorgon uses Gaze and must use either Beguiling Gaze or Confusing Gaze.

Melee Weapon Attack +17 to hit, reach 15 ft., one target. 20 (2d10 + 9) Bludgeoning damage plus 11 (2d10) Necrotic damage.

Demogorgon uses Spellcasting.