Desert Marksman

You are an expert at firing arrows through flurries of blowing sand, scorching heat, and distracting sunlight, you gain the following benefits:

•  Increase your Dexterity or Wisdom score by 1, to a maximum of 20. 
• If you had sunlight sensitivity, this feat negates the sensitivity. 
• While in desert environments your ranged weapon attacks range is doubled.
• You ignore the penalties of lightly and heavily obscured areas caused by magical or nonmagical blowing sand, dust, or dirt and cannot be blinded by magical sand, dust, or dirt.
• You can magically imbue your ranged attacks with the heat of the desert. Before you make an attack with a ranged weapon that you are proficient with, you can choose to take a -2 penalty to the attack roll. If that attack hits, you add 5 (1d10) fire damage to the attack's damage.