Firbolg Evasion

Your hidden steps make you invisible from all creatures regardless of sight, and can be used 3 times until you need to rest. While the hidden step is active, you are resistant to all damage and immune to all effects. When you are subjected to an effect that allows you to make a Wisdom, Intelligence or Charisma saving throw to take only half damage, you instead take no damage if you succeed on the saving throw, and only half damage if you fail. Finally, your kind has become one with nature and can fully understand all manner of Beast and Plant.