Champion of the Deep

Whether through battling Sahuagin or other enemies in the depths, your body has adapted to combat, granting you the following benefits: 

• Increase your Strength, Constitution, or Charisma score by 1, to a maximum of 20
• You gain darkvision out to a range of 60 feet, or to 120 feet while fully submerged in water
• You gain resistance to lightning damage and thunder damage