Large monstrosity, chaotic evil

• Armor Class 15 (natural armor)
• Hit Points 75 (10d10 + 20)
• Speed 40 ft.

• Damage Immunities poison
• Condition Immunities charmed, poisoned
• Senses darkvision 60 ft., passive Perception 12
• Languages Abyssal, Common
• Challenge 8 (3,900 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 a 10th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 14, +6 to hit with spell attacks), and it needs only verbal components to cast its spells. It has the following wizard spells prepared:

• Cantrips (at will): Mage Hand, Minor Illusion, Ray of Frost
• 1st level (4 slots): Charm Person, Detect Magic, Sleep
• 2nd level (3 slots): Detect Thoughts, Hold Person
• 3rd level (3 slots): Lightning Bolt, Water Breathing
• 4th level (3 slots): Blight, Dimension Door
• 5th level (2 slots): Dominate Person

Actions

Bite. Melee Weapon Attack: +7 to hit, reach 10 ft., one creature. Hit: 7 (1d6 + 4) piercing damage, and the target must make a DC 13 Constitution saving throw, taking 31 (7d8) poison damage on a failed save, or half as much damage on a successful one.