As per this mobile dnd 5e feat you’re exceptionally speedy and also agile. You can get the following benefits:
- As a Mobile your speed can be increased by 10 feet.
- Whenever you do use the dash action, and the difficult terrain does not even cost you an extra movement on that particular turn.
- Also, when you make a melee attack mostly against to the creature, also you do not provoke the opportunity attacks from that specific creature for the rest of a turn, no matter whether you hit or not.