Air 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.

Multiattack. The spider makes two bite attacks.

Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one creature. Hit: 14 (2d8 + 5) piercing damage, and the target must make a DC 11 Constitution saving throw or be knocked prone.

Whirlwind (Recharge 5-6). Each creature within 5 feet of the spider must make a DC 13 Strength saving throw. On a failure, a target takes 14 (2d8 + 5) bludgeoning damage and is flung up to 10 feet away from the spider in a random direction and knocked prone. If a thrown target strikes an object, such as a wall or floor, the target takes 3 (1d4) bludgeoning damage. If the target is thrown at another creature, that creature must succeed on a DC 13 Dexterity saving throw or take the same damage and be knocked prone.
If the saving throw is successful, the target takes half the bludgeoning damage and isn't flung away or knocked prone.