Aracneae (spider)

Extra legs:                                                                                                                    Due to your extra appendages you have the ability to climb on difficult surfaces, including upside down on ceilings, without needing to make an ability check. You also have advantage on dexterity checks that require balance or use of your legs.

Multiattack.  Aracneae (spider) makes two melee attacks and one web attack.

 Web attack:                                                                                                                      You can make a ranged attack  (30/60 ft) targeting one creature. On a hit the target is restrained by webbing. As an action, the restrained target can make a DC 12 Strength check, bursting the webbing on a success. The webbing can also be attacked and destroyed (AC 10; hp 5; vulnerability to fire damage; immunity to bludgeoning, poison, and psychic damage).

Unarmed Strike. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 4 bludgeoning damage.