When determining your ability scores, you increase one of those scores by 2 and increase a different score by 1.

Your lifespan and rate of maturity is equivalent to that of a Drow Elf's.

Most driders find themselves driven to madness after their transformation, leading them more towards chaotic and often neutral or evil alignments.

Driders stand between 7 and 8 feet tall. Your size is medium.

Your base walking speed is 30 feet. Additionally you have a climbing speed equal to your walking speed.

Your creature type is monstrosity, rather than humanoid.

Your horrific form easily strikes terror in the hearts of even the most fearless of creatures. You gain proficiency in the Intimidation skill.

Your darkvision has a radius of 120 feet.

You have disadvantage on attack rolls and on Wisdom (Perception) checks that rely on sight when you, the target of your attack, or whatever you are trying to perceive is in direct sunlight.

You have advantage on saving throws against being charmed, and magic can't put you to sleep. 

You can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

You ignore movement restrictions caused by webbing.

While in contact with a web, you know the exact location of any other creature in contact with the same web.

Starting at 3rd level you can learn the spell Web and can cast it without material components. Once you have cast Web in this way you cannot do so again until you have finished a long rest.

Your fangs are a natural weapon, which you can use to make unarmed strikes. If you hit with it, you deal poison damage equal to 1d4 your Constitution modifier, instead of the bludgeoning damage normal for an unarmed strike.

You count as one size larger when determining your carrying capacity and the weight you can push, drag, or lift.

You can speak, read, and write Common, Elvish, and one more language of your choice.