Large monstrosity, lawful good

• Armor Class 18 (natural armor)
• Hit Points 127 (15d10 + 45)
• Speed 40 ft.

• Damage Immunities poison
• Condition Immunities charmed, poisoned
• Senses darkvision 60 ft., passive Perception 14
• Languages Celestial, Common
• Challenge 10 (5,900 XP)

Traits

Rejuvenation. If it dies, the naga returns to life in 1d6 days and regains all its hit points. Only a Wish spell can prevent this trait from functioning.

Spellcasting. The naga is an 11th-level spellcaster. Its spellcasting ability is Wisdom (spell save DC 16, +8 to hit with spell attacks), and it needs only verbal components to cast its spells. It has the following cleric spells prepared:

• Cantrips (at will): Mending, Sacred Flame, Thaumaturgy
• 1st level (4 slots): Command, Cure Wounds, Shield of Faith
• 2nd level (3 slots): Calm Emotions, Hold Person
• 3rd level (3 slots): Bestow Curse, Clairvoyance
• 4th level (3 slots): Banishment, Freedom of Movement
• 5th level (2 slots): Flame Strike, Geas
• 6th level (1 slot): True Seeing

Actions

Bite. Melee Weapon Attack: +8 to hit, reach 10 ft., one creature. Hit: 8 (1d8 + 4) piercing damage, and the target must make a DC 15 Constitution saving throw, taking 45 (10d8) poison damage on a failed save, or half as much damage on a successful one.

Spit Poison. Ranged Weapon Attack: +8 to hit, range 15/30 ft., one creature. Hit: The target must make a DC 15 Constitution saving throw, taking 45 (10d8) poison damage on a failed save, or half as much damage on a successful one.