Comanche Archer

This FEAT requires Dex 15 and proficiency with the longbow.

Setup time, 1 turn. During this time any attackers have advantage against the archer.
The archer can move up to normal walking distance  but no actions, bonus actions, or reactions can be taken during this turn (Saving throws are allowed).

After setup, the archer may fire up to 5 arrows in rapid succession in a single attack. To hit rolls must be made for each arrow.

'from a distance of three hundred feet, a Comanche could hit you with an arrow if you stood still, but since you could see the arrow coming. you had time to get out of the way. The only catch: You had to watch for the other three or four arrows that would be following the first.' (1)  

1. Smith, Eric, The Warrior's Tools: Plains Indian Bows, Arrows and Quivers, Oklahoma City, The RoadRunner Press, March 18, 2019