Fallen Celica

Seal: Heavy Blade/HP+
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Her spd makes her fast enough to deal with most units, and Chill Spd will allow her to secure doubles on what she couldn't beforehand. The idea is to engage on a unit and trade blows, hopefully killing the opponent in the process, and having it set off her chain reaction. Brazen turns the relevant stats into 58 and 37, respectively. With Atk Smoke going off it further increases her bulk to 44 def and 33 res and being unlikely to be doubled. The seal is still under debate as while Heavy Blade synergises amazingly here, her HP is so low due to a low base on top of a super bane lowers her ability as a duelist. An HP seal can help patch it to a more manageable 41 if the lack of health is harmful enough to her functionality.
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This F!Celica build is designed to engage primarily for ranged battles, most likely emblem teams. The dull ranged skill is used just for those +6/6 hones, which can most likely save F!Celica's sustain. The smoke skills are there for a good probability that F!Celica to live another unit, as the enemy would need at least 47 speed or a brave weapon to double, as F!Celica's 35 speed and the -7 speed debuff from the speed smoke skill. The attack smoke skill also helps in the surviving a second unit. Overall, this build is generally an EP unit.

I S-Supported her, and she is a killer tank, she has a lot of speed that prevents her from being doubled, and she has a fair amount of defense and res for an infantry unit, also he wicked attack makes her Heavy Blade useful and she gains her special right away. I have Fury and Desperation together because as she loses her Hp, she gets close to her Desp. state and she becomes a perishing killer! >:D Then she'd get her Aether even quicker because of Desp. and HB and she'd heal right back up!

Duma's faithful servant is here, and she is smuggling some surprises within her kit. Of course Beloved Zofia gives her a reliable +4 to all of her stats when at full health, but she will take 4 damage when initiating combat. So what do you do when Duma's best girl just can't stay at full health all the time? Well, if your Celica has neutral IVs in HP, Fury 3 is the slot A for you! Not only will it amp all of her stats by 3, the recoil damage from Beloved Zofia and Fury 3 will drop her into the thresholds of Vantage 3, Desperation 3, or for more expensive players, Wrath 3, all after just one round of combat! For her slot C, I recommend Speed Smoke 3 from Fallen Takumi or Sigurd. Not only does It help to slow the enemies near Celica, but it can also cement her as a support unit for other heroes who just can't quite outspeed! Her seal of choice should be Attack Smoke 3 since the two smoke skills will hit all enemies in two spaces with minus 7 to both attack and speed, giving her a great role as a physical sweeper, tank, and support unit all in one! To wrap this up, Luna is a good special to get around armor units or units that are just naturally bulky, although Draconic Aura will also work since base 35 attack on this set will ultimately round out to 16 additional damage consistently. Also consider Dragon Fang if you are running a unit with Infantry Pulse 3.

While the C slot is flexible (I chose it since I run Ayra and Nino nukes) everything else is optimal to this build. This build is very melee heavy and made to tank melee only. She can withstand hit from even sapphire lance users with a full power defense of 47 when attacked and that is without outside buffs. She is however very vulnerable to most magic users and will die to any meta red and blue mages. You should not attack with her often, let steady breath build aether and bring her back to full health consistently to allow her to fight at full power.