Adult Kython

When kythons mature fully, their torso grows so that they become a little more like upright humanoids (although they still usually hunch over). Their tail drops away as they pass into this stage, but they gain another set of clawed arms. The exoskeleton is now either green, dark blue, or black. Adults guard the nests and carry out most of the work that needs doing for kython society as a whole. Most kythons remain in this stage forever. A few mature into more specialised stages, most of these becoming impalers, a few transforming into slaymasters, and very rare individuals becoming slaughterkings. Each adult has a 30% chance to possess a kython weapon.

d% Weapon

01-20 Acid spitter

21-50 Bone shard crossbow

51-60 Boneblade

61-70 Extra armor

71-80 Mouth launcher

81-90 Mucus pod

91-100 Phase organ

Acid Spitter

ranged weapon

Damage: 3d6

Damage Type: acid

Range: 10/5o

Bone Shard Crossbow

ranged weapon

Damage: 1d4

Damage Type: piercing

Range: 20/4o

Special: The target is subject to the same poison inflicted by the bite attack of the kython wielding it. 

Boneblade

melee weapon

Damage: 2d8

Damage Type: slashing

Special: attack and damage rolls made with this weapon receive a +1 bonus.

Extra Armor

armor

Special: extra chitinous plates are fitted to the kython’s body, adding +2 to its existing armor class. 

Mouth Launcher

melee weapon

Damage: 1d6

Damage Type: piercing

Special: this weapon fits inside the mouth of the kython wielding it and does not replace one of the kython’s claw attacks, however, it is still included as part of the kython’s multiattack action. A successful hit with this attack grapples the target. While the target is grappled this way, any bite attack made against them by the kython wielding this weapon is an automatic hit. Add +1 to the challenge rating of a kython with this weapon. 

Mucus Pod

equipment

Special: this weapon affixes to a claw of the kython wielding it. When the kython makes a claw attack using the claw this weapon is attached to, the attack also sprays mucus at the target. A creature hit by the attack must succeed on a DC 15 Dexterity saving throw or become restrained in the mucus for 1d4+1 rounds. Alcohol will wash the mucus away, otherwise the restrained target may attempt a DC 18 Strength saving throw at the end of each of their turns to break free. 

Phase Organ

equipment

Special: this small fleshy pod fits upon the forehead of the kython, grafting into place permanently. It allows the kython to cast the misty step spell once per turn. 

All credit for this monster's stat block goes to the Dungeon Dad youtube channel (https: //www. youtube .com/ @DungeonDad (spaces added so I can publish this lol)). I made this so I (and others) can use it in dndbeyond.