The Drow have made themselves distinct from the Elves with a more cunning form of swordplay.
You may use Charisma in place of Intelligence when utilizing the Elven Weapon Trait.
You freely see magical auras at all times, as if under the effect of a constant Detect Magic spell.
You may now cast Darkness three times per day, instead of one. Additionally, you may cast Deeper Darkness once per day.
You may cast Levitate and Feather Fall at will.
You may cast Suggestion at will.
You gain Spell Resistance equal to 11 + your Hit Dice or Caster Level, whichever is greater.