Drider are venomous, producing involuntarily as roughly 20% of their saliva production is replaced.

Driders can produce spider silk, which has a variety of uses.

Your Dexterity score increases by 2.

Driders have no definite lifespan, which doesnt matter much as most don't make it long before being killed by something or someone, either because they go insane and become a danger to others, are taken out by a monster that views them as a threat to their territory, or are assumed to be a threat regardless of their sanity. Mechanically, depending on the DM, they either stop aging so time isnt a limiting factor to Lolths amusement/pleasure from this punishment, or they live to the standard elvish age of 750. They are most often transformed in late adolescence to anytime in adulthood, depending on character backstory.

Driders range from 6 to 10 feet, most of their height is accounted for by their many legs. Their top halves range the same coloration as the Drow, (greys/whites for skin, dark colours for hair) and their lower halves can look like any type of spider. They're actually fairly heavy, starting out at 200 pounds with those of particularly large spider parts topping out at 600. Females tend to be larger than males, and clothing tends to irritate their skin, leading them to prefer their own webbing or soft fabrics like silk.

All Driders are treated as Large mechanically due to the sheer size of their spider half.

Don't shy away from running jokes abour doors, beds and chairs never being big enough/comfortable, have some fun with it!

Walking Speed: 30
Climbing: 30
Swimming: 10
Burrow: 20
Fly: 20

Accustomed to twilit forests, dark caves systems, and the night sky, you have superior vision in dark and dim conditions. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.

You have proficiency in the Perception skill.

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

Elves don’t need to sleep. Instead, they meditate deeply, remaining semiconscious, for 4 hours a day. (The Common word for such meditation is “trance.”) While meditating, you can dream after a fashion; such dreams are actually mental exercises that have become reflexive through years of practice. After resting in this way, you gain the same benefit that a human does from 8 hours of sleep.

Driders inherit this from having originally been Drow.

You can speak, read, and write Common and Elvish. Elvish is fluid, with subtle intonations and intricate grammar. Elven literature is rich and varied, and their songs and poems are famous among other races. Many bards learn their language so they can add Elvish ballads to their repertoires.