|While the Brave Bow set is better at deleting frail defensive units, Firesweep Bow+ is better at dealing with tanks - especially those with Distant Counter like Hector, as Cordelia can initiate on any unit and not worry about getting counterattacked.
With this set, a +Spd boon is preferred to ensure Cordelia doubles as much units as possible. Life and Death 3 is the A passive of choice, as it increases both attack and speed. The fact that Cordelia's defense and resistance get lowered by it doesn't matter a lot, as Cordelia's defenses are very low even without Life and Death equipped, and Firesweep Bow removes the need for defensive stats when intitating.
In the B slot, Chill Spd 3 is chosen because it lowers the fastest enemies into a speed value that allows Cordelia to double them. Since only the fastest units can avoid the double, Chill Speed will always target them and allow her to get the two hits reliably.
Just like the Brave Bow build, the C slot is flexible and can be used for a Spur or Hone based on the player's needs.
For the special, Moonbow is the preferred option as it allows Cordelia to combat tanks more effectively, and it also activates every engage if Cordelia gets the double, which she needs to have a successful kill, thanks to Flashing Blade 3. Like with her Brave Bow set, the assist can be either Draw Back or Reposition.