Cecilia

IVs: +Spd -HP

This set provides a new take on the signature Death Blow build that is often run on Cecilia and turns it into a blazing fast glass cannon. Compared to her Death Blow build when buffed with a Hone and Fortify Cavalry Boost (both builds having Gronnblade+) , compared to Death Blow's 84 atk, Life and Death Cecilia hits 80, which is only 5 points away. What compensates for this, however, is the fact that with +spd IV (29 speed), the aforementioned Hone Cavalry boost, Life and Death 3, and the +spd 3 seal, Cecilia hits a blistering 43 speed.

This build works on a similar principle as several brave builds: anything fast enough to avoid being doubled will easily fall to the sheer power of her boosted bladetome, and anything that doesn't immediately fall will conversely be doubled and fall on the next attack. It should also be noted that this build also nets several more wins against the Death Blow build in simulation by manner of doubling, making it an ideal option.

The rest of the build is self-explanatory as a bread-and-butter bladetome build: Ardent Sacrifice to help trigger Desperation and double targets safely, such as Ike and Black Knight, Moonbow for its low cooldown since special isn't needed that much with blade tomes, and a cavalry boost C slot, assuming she is run in Horse Emblem.

The ultimate Reinhardt and Brave Lyn counter. Easy to get, easy to build and cheap.

The goal of this set is to bait and kill Reinhardt and/or Brave Lyn so Gronnraven+ and TA3 are mandatory. Bowbreaker ensures Cecilia won't be doubled by archers and will double them instead. The Passive C slot is flexible.

Reposition/Draw back provides great untility while Moonbow will activate inmediatly after a Brave Bow or Dire Thunder double hit.

Neutral IV is the best choice but +atk -hp plus the hp Sacred Seal can work too. With the Distant Def 1 SS she will recive even less damage from archers.

She doens´t need any kind of support to get her job done but anything will be aprecciated, especially calvary buffs.

This set will fall to the rare Innes and Cancel Affinity Brave Lyn however.

My Cecilia happens to be a Spd boon Cecilia so giving her Darting Blow nets her more ORKOs than giving her Death Blow which works better with a Atk boon Cecilia. Swift Sparrow is also a nice choice but its harder to come by, where as Life and Death makes her a complete glass Cannon (then again with Cavalry buffs on a blade tome, why would you need the extra attack?)

Draw Back was chosen as the assist of choice mostly due to the fact that you can conveniently grab it as the third skill off of Nino when you SI. Otherwise you can opt for Ardent Sacrifice to get into Desperation range more easily. If Cecilia is an attack boon, G Tomebreaker makes for a good B skill or you can use her default Escape Route.

If you're making use of a bladetome, the cooldown count on a special shouldn't be of much concern, so if it does come down to needing more firepower to net a KO, Iceberg will do the trick. More often than not, Cecilia will be doubling thanks to 46 speed from Darting Blow, Hone Cav, Goad Cav, and Speed +1 Seal so she can reach her special faster, assuming she doesn't OHKO her opponent. With a Res +1 seal and Fortify Cav buffs, she can reach 36 Res and get 18 extra damage off of Iceberg (19 damage with Hone Cav buffs off of Draconic Aura if Atk boon). With a high Res like that, she can comfortably take hits from Blue mages and to an extent Green mages.

+1 speed seal
Basically Nino on a horse (build is specifically for horse embem). Her high speed in this build covers for the attack drop but she actually preforms better with it (-def is still optimal). Has low health so Vantage can proc quicker, enabling her to ORKO opponents even on EP. Hone Cavalry is to help her mounted allies who also have hone cavalry. Her seal is flexible, but the upcoming Atk Ploy 1 would suit her well.

Merged +1, S-support
Nuclear Bladetome Horse Emblem. High SP skills to maximize Arena value. S-support and Hone Cavalry boost bring her speed to 40 and make +Spd boon worth while.