race features:
Desert Dweller. You're acclimated to desert environments and require very little water to survive, you require only ¹/₂ gallon of water per day instead of the normal 3 gallons per day. You're also naturally adapted to hot climates and do not suffer the normal ill-effects of such environments.
Sand Masters. Thanks to your extended eyelashes, you can see through sand storms as if they were clean air. They also allow them to be a natural filter of light giving them advantage on checks in bright sun. Difficult terrain composed of sand doesn't cost extra moment.
Desert Magic. You know the produce flame cantrip. Once you reach 3rd level, you can cast create or destroy water once per day as a 1st level spell. Once you reach 5th level, you can also cast sand barrage' as a 2nd level spell once per day. Wisdom or Charisma (your choice) is your spellcasting ability for these spells.