Medium monstrosity, any alignment
- Armor Class
- 15 (natural armor)
- Hit Points
- 99 (18d8 + 18)
- Speed
- 30 ft.
- Challenge
- 5 (1,800 XP)
- Skills
- Stealth +5, Survival +6, Perception +6
- Senses
- darkvision 60 ft., passive Perception 16
- Languages
- telepathy 60 ft., Thri-kreen
Actions
The thri-kreen makes two Gythka attacks or four Psychic Bolt attacks.
Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 10 (2d8 + 1) slashing damage.
Ranged Spell Attack: +6 to hit, range 60 ft., one creature. Hit: 6 (1d6 + 3) psychic damage.
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.
Bonus Actions
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.
Spellcasting
The thri-kreen casts one of the following spells, requiring no spell components and using Wisdom as the spellcasting ability: