Star Spawn Larva Mage

Medium aberration, chaotic evil

Armor Class

16 (natural armor)

Hit Points

168 (16d8 + 96)

Speed

30 ft.

STR

17 (+3)

DEX

12 (+1)

CON

23 (+6)

INT

18 (+4)

WIS

12 (+1)

CHA

16 (+3)

Damage Immunities

psychic

Damage Resistances

cold; bludgeoning, piercing, and slashing from nonmagical attacks

Condition Immunities

charmed, frightened, paralyzed, petrified, poisoned, restrained

Senses

darkvision 60 ft., passive Perception 16

Saving Throws

Dex +6, Wis +6, Cha +8

Skills

Perception +6

Languages

Deep Speech

Challenge

16 (15,000 XP)

Innate Spellcasting. The larva mage’s innate spellcasting ability is Charisma (spell save DC 16, +8 to hit with spell attacks). It can innately cast the following spells, requiring no material components:

  • At will: eldritch blast (3 beams, +3 bonus to each damage roll), minor illusion

  • 3/day: dominate monster

  • 1/day: circle of death

Return to Worms. When the larva mage is reduced to 0 hit points, it breaks apart into a swarm of insects in the same space. Unless the swarm is destroyed, the larva mage reforms from it 24 hours later.

Actions

Slam Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 7 (1d8 + 3) bludgeoning damage, and the target must succeed on a DC 19 Constitution saving throw or be poisoned until the end of its next turn.

Plague of Worms (Recharge 6) Each creature other than a star spawn within 10 feet of the larva mage must make a DC 19 Dexterity saving throw. On a failure the target takes 22 (5d8) necrotic damage and is blinded and restrained by masses of swarming worms. The affected creature takes 22 (5d8) necrotic damage at the start of each of the larva mage’s turns. The creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Legendary Actions

The larva mage can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. The larva mage regains spent legendary actions at the start of its turn.

Cantrip (Costs 2 Actions) The larva mage casts one cantrip.

Slam (Costs 2 Actions) The larva mage makes one slam attack.

Feed (Costs 3 Actions) Each creature restrained by the larva mage’s Plague of Worms takes 13 (3d8) necrotic damage, and the larva mage gains 6 temporary hit points.

medium
aberration
cr16
mordenkainens-tome-of-foes
(p. 235)