Spider Climb: The spider able to climb few difficult surfaces, mostly it includes upside down on ceilings, without needing to make an ability check.
Web Sense: While in the contact with a web, the spider knows the exact location of any other creature in contact with the same web.
Web Walker: The spider might be ignores Movement restrictions caused by webbing.
Bite: It makes a Melee Weapon Attack: +4 to hit, reach 5 ft., one creature. Hit: 1 piercing damage, and the target must succeed on a DC 9 Constitution saving throw or take 2 (1d4) poison damage.
Attributes Of Spider Monster DnD 5E
Bite 1d20 + 4 1
Darkvision 30 Ft.
20 ft., climb 20 ft.