Sources
CR
Type
Size
Alignment
Movement

Bone Naga (Spirit)

Large Undead, Lawful Evil

Armor Class 15 (natural armor)
Hit Points 58 (9d10 + 9)
Speed 30 ft.
STR
15
+2
DEX
16
+3
CON
12
+1
INT
15
+2
WIS
15
+2
CHA
16
+3
Damage Immunities poison
Condition Immunities Charmed, Exhaustion, Paralyzed, Poisoned
Senses darkvision 60 ft., passive Perception 12
Languages Common plus one other language
Challenge 4 (1,100 XP)

Spellcasting

Spellcasting. The naga is a 5th-level spellcaster (spell save DC 12, +4 to hit with spell attacks) that needs only verbal components to cast its spells. Its spellcasting ability is Intelligence, and it has the following wizard spells prepared:

Cantrips (at will): mage hand, minor illusion, ray of frost

1st level (4 slots): charm person, sleep

2nd level (3 slots): detect thoughts, hold person

3rd level (2 slots): lightning bolt

Actions

Bite. Melee Weapon Attack: +5 to hit, reach 10 ft., one creature. Hit:10 (2d6 + 3) piercing damage plus 10 (3d6) poison damage.

Lore

Nagas are intelligent serpents that inhabit the ruins of the past, amassing arcane treasures and knowledge.