Exaspider

Exa Spider

Small construct, neutral

Armor Class: 14

Hit Points: 13

Speed: 45 ft , climb: 45 ft

STR

12 +1

DEX

18 +4

CON

16 +3

INT

4 -3

WIS

5 -3

CHA

4 -3

Saving Throws: DEX +7

Damage Vulnerabilities: Lightning

Damage Resistances: Fire

Damage Immunities: Psychic, Necrotic, Poison

Condition Immunities: Frightened, poisoned, charmed, Petrification

Languages: Understand common but cannot speak

Web Strand - The Exaspider fires out a strand of flexible steel coated with a sticky substance.  Range 60 ft.  If a target is hit the flexible steel thread reduces the targets movement by half.  If the target is hit by another thread from another spider their movement is reduced to half of that.  A third one will reduce the targets movement to 0.
Web Attack - Once per hour the Exaspider can release a flexible steel net coated in a sticky substance.  This attack uses the stats of the Web Spell with the change that this net is not flammable.  
[You conjure a mass of thick, sticky webbing at a point of your choice within range. The webs fill a 20-foot cube from that point for the Duration. The webs are Difficult Terrain and lightly obscure their area. If the webs aren't anchored between two solid masses (such as walls or trees) or layered across a floor, wall, or ceiling, the conjured web collapses on itself, and the spell ends at the start of your next turn. Webs layered over a flat surface have a depth of 5 feet.
Each creature that starts its turn in the webs or that enters them during its turn must make a Dexterity saving throw. On a failed save, the creature is Restrained as long as it remains in the webs or until it breaks free.
A creature Restrained by the webs can use its ACTIONS to make a Strength check against your spell save DC. If it succeeds, it is no longer Restrained.]

Actions

Multiattack 2X-
Claw attack - The Exaspider attacks with two of its razor sharp legs.  +5 to hit  Damage is 1d4+2.