Lolth is the deity of law turned evil. Strict, unforgiving, unbending, and fully prideful.
Her purpose in a campaign is to create an implacable enemy. She is the supreme and sole ruler of the [[UFIS/Tam's Campaign/Locations/Underdark|Underdark]] and has total sway over [[Tam's Campaign/Factions/Drow Queendoms|Drow]] Society.
Her power is such that direct confrontation is impossible. In my campaigns, all Drow are _lawful evil_, because they are tied into Lolth's strict power structure and are ultimately controlled by her.
When Drow break away they are usually _true neutral_ or _chaotic evil_. Occasionally _chaotic good_ like [[Tam's Campaign/NPCs/Belaryl Horzza|Bel]].