Drow Magic

You know the Dancing Lights cantrip. When you
reach 3rd level, you can cast the Faerie Fire spell
once with this trait and regain the ability to do so
when you finish a long rest. When you reach 5th level, you can cast the Darkness spell once with this
trait and regain the ability to do so when you finish
a long rest.
CHA is your spellcasting ability for these spells.