Pazuzu

Any evil creature with a natural fly speed and a CR of 20 or less must make a DC 21 Wisdom saving throw if they attempt to attack Pazuzu. A failed save means their action is wasted and the attack fails. On a successful saving throw the target is immune to this effect in the future.

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

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

Pazuzu's weapon attacks are magical.

Pazuzu makes two Greatsword or Talon attacks.

Melee Attack Roll: +14 to hit, reach 5 ft., one target. Hit: 13 (2d6 + 6) slashing damage plus 7 (2d6) necrotic damage.

Melee Attack Roll: +14 to hit, reach 5 ft., one target. Hit: 15 (2d8 + 6) slashing damage plus 9 (2d8) poison damage.

Pazuzu exhales poisonous acid in a 100-foot line that is 5 feet wide. Every creature hit by the acid must make a DC 21 Dexterity saving throw, taking 70 (20d6) acid damage on a failed save, or half as much damage on a successful one. A creature killed by this breath weapon melts and is disintegrated.

Pazuzu attempts to knock a weapon out of a target's hand. He makes a Greatsword attack and if it hits, the target does not take damage but instead must make a DC 22 Strength saving throw. If the target fails the saving throw, the targeted weapon flies 10 feet away in a random direction.

Pazuzu attacks once with his Greatsword or Talon and then may fly up to 60 feet away. Pazuzu's movement does not provoke opportunity attacks.

Pazuzu casts one of the following spells, requiring no material components and using Charisma as the spellcasting ability (spell save DC 24):

At will: astral projection, blight, charm person, detect evil and good, dispel magic, hallow, insect plague, telekinesis, teleport, wind walk

1/day: wish

2 each/day: dominate person, hypnotic pattern, plane shift (only itself and willing creatures)