Dwemer Spider CR: 1/4

Small construct, lawful neutral

Armor Class: 15

Hit Points: 14 (4d6) 4d6

Speed: 30 ft , swim: 0 ft , climb: 30 ft

STR

12 +1

DEX

14 +2

CON

10 +0

INT

6 -2

WIS

10 +0

CHA

4 -3

Damage Vulnerabilities: Lightning

Damage Resistances: Fire, Frost, Piercing, Slashing

Damage Immunities: Poison, psychic

Condition Immunities: Poisoned, frightened, charmed, exhaustion

Senses: darkvision 60ft, passive Perception 10

Languages: Dwemer, but cannot speak

Challenge Rating: 1/4

Proficiency Bonus: +2

Metal Construct. As a metal construct the Dwemer Spider does not need to breathe, however it is incapable of swimming.
Spider Climb. The Dwemer Spider can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.
Explode on Death. The Dwarven Spider explodes in sphere of lightning bolts upon its death, any creature within 10 feet of the Dwarven Spider when it dies must make a Dexterity saving throw, taking 2d8 lightning damge or half as much on a successful save.

Actions

Claw. Melee Weapon Attack: +4 to hit, reach 5 ft, one target. Hit: 1d6+2 piercing damage.
Shock Spit. Ranged Weapon Attack: +4 to hit, range 30/60, one target. Hit: 1d4+2 lightning damage.

Harvesting: Dwarven Scrap Metal, Dwarven Oil, Lesser Soul Gem (Filled)