Arachnogoblin

Spider Legs (Multi-limbed Agility):
The Arachnogoblin has six spider-like legs protruding from its back, granting it incredible agility. It can move through spaces as narrow as 2 feet wide without squeezing, and it has advantage on checks and saving throws made to escape grapples.

Arachnoid Reflexes:
The Arachnogoblin gains an extra reaction each round that it can use only for opportunity attacks.

Web Walker:
The Arachnogoblin ignores movement restrictions caused by webbing.

Venomous Strike (Recharge 5–6):
Once per turn when the Arachnogoblin hits with a melee attack, it can inject venom into the target. The target must succeed on a DC 15 Constitution saving throw or take 14 (4d6) poison damage and be poisoned for 1 minute. The target can repeat the saving throw at the end of each of its turns, ending the condition on a success.

Multiattack. The Arachnogoblin makes three attacks: one with its claws, one with its bite, and one with its spider-leg kick.

Claw Swipe. Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 9 (1d10 + 3) slashing damage.

Bite: Melee Weapon Attack: +6 to hit, reach 5 ft., one target Hit: 6(1d8+3) piercing damage

Leg Kick: Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit 9(1d10 + 3) bludgeoning damage

Venomous Strike (Recharge 5–6):
Once per turn when the Arachnogoblin hits with a melee attack, it can inject venom into the target. The target must succeed on a DC 15 Constitution saving throw or take 14 (4d6) poison damage and be poisoned for 1 minute. The target can repeat the saving throw at the end of each of its turns, ending the condition on a success.

Retaliatory Strike:
When a creature within 10 feet of the Arachnogoblin hits it with an attack, it can use its reaction to make one attack with its spider-leg kick.