Ancient Giant Wolf Spider

Spider Climb. The spider can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Web Sense. While in contact with a web, the spider knows the exact location of any other creature in contact with the same web.

Web Walker. The spider ignores movement restrictions caused by webbing.

Three Attacks: Bite and Two Leg Attacks

Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one creature. Hit: (3d8 + 1) piercing damage, and the target must make a DC 11 Constitution saving throw, taking 7 (2d6) poison damage on a failed save, or half as much damage on a successful one. If the poison damage reduces the target to 0 hit points, the target is stable but poisoned for 1 hour, even after regaining hit points, and is paralyzed while poisoned in this way.

Leg.  Melee Weapon Attack: +4 to hit, reach 10ft., one creature per leg.   Hit: 3d8 bludgeoning damage, and the target must make a DC 12 Dexterity save or be knocked prone. 

Same as attacks.