Sources
CR
Type
Size
Alignment
Movement

Fiendish Formian

Medium Fiend, Lawful Evil

Armor Class 15 (natural armor)
Hit Points 45 (6d8 + 18)
Speed 40 ft.
STR
18
+4
DEX
14
+2
CON
17
+3
INT
10
+0
WIS
12
+1
CHA
11
+0
Saving Throws STR +6
Skills Acrobatics +4, Stealth +4
Damage Resistances bludgeoning, piercing, slashing, from nonmagical attacks that aren't silvered
Damage Immunities cold, fire, poison
Condition Immunities Charmed, Poisoned
Senses darkvision 60 ft., passive Perception 11
Languages Formian
Challenge 4 (1,100 XP)

Traits

Hive Mind. All fiendish formians within 1 mile of Ekengarik can telepathically communicate with each other and Ekengarik.

Actions

Multiattack. The fiendish formian makes two Claw attacks.

Claw. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit:7 (1d6 + 4) slashing damage.

Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit:8 (1d8 + 4) piercing damage and the target must make a DC 14 Constitution saving throw. On a failed save, the target's Strength score is reduced by 1. The target dies if this reduces its Strength to 0. Otherwise, the reduction lasts until the target finishes a short or long rest.