Neutral Caeda

If you don't have hit and run, that usually shouldn't be an issue. Drag back is nearly identical. If you don't have that as well for whatever reason, then you could try for a more generalist caeda instead of an offensive one. Naturally, I will assume you don't want to spend a hector on this so no distant counter, meaning something of fury, swordbreaker, and a c skill of choice should be fine. Regardless, if you have drag back, or even possibly if you don't, a player phase build of swift sparrow/life and death/darting blow/death blow, drag back/swordbreaker/chill stat, and a c of choice. Regarding Brave Lyn, the swift sparrow fodder probably isn't worth it on just a neutral caeda. I would say that even a -spd Lyn still has 33/32 stats and unparalled movement so its not even too bad, and you should only sack her if you have another or you have a really good other unit that really wants swift sparrow over life and death. Hope this helps!

I use a +atk-def Caeda, and the build I run with flashing blade refinement is darting blow(too cheap to give her swift sparrow)/desperation/flier buff skill. Her neutral speed being at 37 (43 after darting blow) warrants desperation since she will double almost all of her intended targets or kill them in one shot. This build with flier buffing has soloed armor emblem before.