+Atk Firesweep Cordelia

I have a +Atk Cordelia and she's definitely good and worth using. I run Swift Sparrow, Hit and Run/Desperation, and Breath of Life/Hone Fliers, etc.

I also have + atk firesweep. Here's what lnd fairs

Some people run her with +atk and put heavy blade in the A slot with the QP seal to proc it on her first battle. The +atk has better synergy with heavy blade, and she's best with flier buffs that can also help boost her spd up to doubling territory.

You want +Atk so you can proc Heavy Blow better and hit your galeforce faster. Run +Atk, LnD, Hit and Run, I've got her at +1 and she's a beast

By all means, it can work well, but you do want Heavy Blade, at the least in seal form if you don't want to, or cannot, sacrifice an Ike.

Well, my Cordelia is +spd, but I can tell you my +atk NY! Camilla does perfectly fine with Firesweep Sword.