Fey Origin: Your ancestors were native to the Feywild, so you are considered a fey creature for the purpose of effects that relate to creature origin.
Trance: Rather than sleep, drow enter a meditative state known as trance. You need to spend 4 hours in this state to gain the same benefits other races gain from taking a 6-hour extended rest. While in a trance, you are fully aware of your surroundings and notice approaching enemies and other events as normal.
Lolthtouched: Once per encounter, you can use either the cloud of darkness or darkfire power.