Thri-kreen Mystic: Dungeon & Dragon 5th Edition Monster

Thri-kreen mystics use psionics to navigate difficult terrain in Wildspace, turn invisible, and drain life from their prey. They often serve as spelljammers aboard thri-kreen ships.

Medium Monstrosity, Any Alignment

Proficiency Bonus: +3
Armor Class: 15 (natural armor)
Hit Points: 99 (18d8 + 18)
Speed: 30 ft.

STR – 12 (+1)
DEX – 15 (+2)
CON – 13 (+1)
INT – 12 (+1)
WIS – 16 (+3)
CHA – 10 (+0)

Skills: Perception +6, Stealth +5, Survival +6

Senses: darkvision 60 ft., passive Perception 16

Languages: Thri-kreen, telepathy 60 ft.

Challenge: 5 (1,800 XP)


Multiattack. The thri-kreen makes two Gythka attacks or four Psychic Bolt attacks.

Gythka. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 10 (2d8 + 1) slashing damage.

Psychic Bolt. Ranged Spell Attack: +6 to hit, range 60 ft., one creature. Hit: 6 (1d6 + 3) psychic damage.

Drain Vitality (Recharges after a Short or Long Rest). The thri kreen targets one creature it can see within 30 feet of itself. The target must make a DC 14 Constitution saving throw, taking 32 (5d12) necrotic damage on a failed save, or half as much damage on a successful one. The thri-kreen regains hit points equal to the damage dealt.

Spellcasting (Psionics). The thri-kreen casts one of the following spells, requiring no spell components and using Wisdom as the spellcasting ability:

At will: levitate (self only), mage hand (the hand is invisible)

1/day each: freedom of movement (self only), invisibility (self only)

Bonus Actions

Chameleon Carapace. The thri-kreen changes the color of its carapace to match the color and texture of its surroundings, gaining advantage on Dexterity (Stealth) checks it makes to hide in those surroundings.