Cordelia

Alternate Skills:
Special: Galeforce/Aether
A: Life and Death/Heavy Blade
B: Wings of Mercy
C: Savage Blow/Flexible (when not on Flier Emblem)
S: Attack+1/Speed+1

The core of my Flier Emblem team (with Elencia). Cordelia uses Firesweep Lance to get free damage (and usually a kill with her massive attack) and her speed usually ensures a double. With the other 3 fliers on the team packing Goad Fliers (as Hone Fliers is near impossible to get), in the ideal scenario, that means +12 to both of her attacking stats, however it usually ends up as +8, but that's still just as good. With hit and run, Cordelia is able to deal damage to any foe before retreating back a spot and her teammates can reposition her to a safer location.

This combination has actually allowed me to kill Hector in a war of attrition as he couldn't counter attack her and she just kept sliding back behind mountain ranges where he couldn't pursue. (https://twitter.com/corpseshadow118/status/908881492645904384). While this set can be a tad annoying and you have to constantly take into account Hit and Run and what could accidentally happen there, this is a pretty strong set. Especially with Death Blow.

What do you get when you really want to screw over red units for no real reason? This Cordelia. Due to being -spd, she's effectively carried by her Brave Lance+, though there aren't really many other options for her to run in the first place, even with more desirable IVs. Triangle Adept is very, very replaceable (in fact, it should be replaced, she can kill greens without it sometimes), as is swordbreaker- with TA, lancebreaker is a better option, without TA, lancebreaker is probably still a better option, but in my experience swordbreaker fodder is far easier to find. She is very much a player phase unit- her natural bulk is awful, and with Bow Lyns running amok as of recent she needs to be positioned carefully. She's a great player phase unit even with less than ideal IVs (mine is +atk at least, which works out with her stock weapon), but you'll want team support with her.

Note- she has Quickened Pulse equipped, which means Gale Wings is likely to trigger during a match.

This build salvages a -Spd Cordelia. Normally, a -Spd Cordelia won't quad with a Brave Lance, so this build aims to kill a unit with only the two swings of a Brave Lance.

Brave Lance+ allows for Cordelia to one hit most enemies without taking damage in return.

Reposition gives Cordelia great utility by allowing her to easily ferry allies around the map.

Galeforce allows for her to sweep a majority of the map in one turn or finish off a tanky unit after she activates it.

Death Blow 3 essentially adds +12 dmg on initiation to increase the number of units that die in one turn greatly.

Drag Back is used to get Cordelia out of areas she might have dived into for a kill.

Threaten Def 3 helps Cordelia's goal in trying to kill the enemy in one turn.

//Attack stat with weapon considered, not merged//

The standard "I use Firesweep over Brave Lance because I have too many feathers"-build. But in all seriousness, Firesweep Lance was my preference over the Brave Lance, even though it is like a quad attack with 2 attack less overall, because it doesn't negate 5 speed, so I could use Darting Blow to make her attack as if she would quad attack with her Brave Lance, but more frequently. Because of that she can secure more kills without any worries, since the enemy cannot counterattack. Galeforce is used to move her to safety or to finish a job she has not finished. Hit and Run is self-explainatory and Drive Def... because I had the Rodericks and because she moves too much to stay next to an ally.

+Spd/-Res;
With this set you go on flying team adding a dancer/singer with wings of mercy.
The other 2 shall be Def wall and Res wall, one with hone fliers and the other with fortify fliers, where Cordelia gets 61/49 offense and 23/23 defense with 40 hp, making neutral solo hits on 63 and 43 on brave weapons or dire thunder(easy for Reinhart), without the less Res cause nature, you will get 20/26 making brave at 40, easier, and dire thunder at 46(you won't touch hp never 40). At 49 speed you won't be doubled out of engaged by a =< 50% hp lancebreaker.

The firesweep lance gives you the huge Mt. of 15 (1 below unique) and the most important thing, you won't be counterattacked, so there's no need to worry about close counters bows, vantages or quick rispostes. You lose some damage in front of quad hits by brave lance, but the passive is just too superior talking about safety issues.

Life and death is obvious for this full reckless build.

On B slot, cancel affinity saves Titania's emmerald axe and some tri affinity green units as Nino or Julia. You can also build up Drag back for safety or wings of mercy and escape route for movility.

At C slot you need some to improve your flying friends, Hone is nice if you can add the wyvern mages on blade tomes, but if you are just on walls as Res Clair or Def Beruka, Camilla, the fortify will help them to tank enemies to get closer.

Reposition is just a great movility skill for the team, and pivot can help to get safer after gale force activate.

Gale force is an awesome skill to combine with Quick pulse, placing on 4 turns activates after attacking 2 times due to dancer/singer, making you able to kill 3 units in 1 turn.
If you don't have Quick pulse or don't want to switch, Moonbow or Luna can also be great, then a 3Hp seal will give you a bit more surbavility.

Thanks all for reading :D.