Theorycrafting with Ryu: Florina (bump copy)

The Hector Protector is here to defend her hubby in the field of battle and help him get around to kill any that dare harm his waifu!
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Florina
+Atk/-HP (or Res)
Killer Lance+ (Slaying Lance when we get it)
Ardent Sacrifice
Moonbow (Iceberg may be chosen for slower high burst)
Fury 3
Quick Riposte 2/3
Guidance 3
HP +3 Seal/Atk Ploy 1 seal
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Deigned to specifically kill your enemy team's red heroes, this Florina build is meant to tank, and return fire to any sword that dares make a move on her and her pegasus. Thanks to Guidance, she can also become your mobility machine for any infantry or armor units (coughHectorcough) to get in where they need to be and start killing anything she shouldn't be messing with, namely greens.

Swords: No sword user without extreme buffs and specials (like moonbow eliwood with full horse buffs) is considered a valid threat to unbuffed Florina. She can also withstand Deathblow Brave Chrom and will then 1 shot him on the first counter attack safely and quad swords are too squishy to land the quad strike without desperation activated already.

Lances: This is where her great counter play gets weaker. Brave lances suffer no power reduction and are fully able to kill her, granted dedicated Brave Lances can usually 1 round any non-effie lance anyways so no biggie here. Cammus is likely the most common lancer and unbuffed, he draws to her in battle if he initiates, dying on her turn. Once Hone Cavalry sets in however, he gets a second attack and it will doom our aerial flower so be careful. Generally faster lances (35 speed and up) should be avoided unless they are already low or they will most likely kill her on the second attack.

Axes: It's her weakness type, so keep her away from these...unless its Hector. Yours that is <.<

Magic: No Red mage is considered a threat, even at a bane for it, Fury keeps her at an impressive 34 resistance and that means red mages are of no relevance. Generally Moonbow is up to initiate on them after the bait so even fury wont stop the 1 attack from killing most of them save maybe fortified Leo. Amazingly, Florina can actually tank buffed Reinhardt on color and survive (when using HP bane or if Atk Ploy triggered) under the one condition that he is not running Quickened Pulse/Moonbow as it will get her killed. If she has any resistance boosts after an atk ploy trigger, she can actually survive the attack. As for green mages, most should be avoided as they will all either double her, or just be the one shot horse nuke Cecilia with buffs and that's no good for her, 34+ resistance or not.

Dragons: With amazing resistance and no dragon fast enough to double her, except speed boosted Corrin/Ninian and they're not offensive enough to be threats, she can duel them all fairly well and will even manage a single round against Fae if she needs to for some odd reason.

This build is made to turn Florina into a more dedicated red counter/bait that can withstand any red attacks send her way and if they are in melee range, she can delete them from the map. Thanks to Guidance, she is also a mobility machine for the rest of your entire team that lets your knights and infantry fighters swoop in to protect her from greens, heal her after a bait, or even just engage an enemy she herself could only get up to 1 space away from. She can also use the skill to get allies to safety, move them across water, lava and mountains even with ease and allow for some very favorable position setups as well.

Will she be the greatest lance in the game with this build? Of course not, but as a focused killer of sword lords (they're common and popular enough that a red killer who's cuter than Reinhardt is nice) She does her job and she does it well with essentially no risk barring far outlier situations.
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~Previous Theorycrafts~

Caeda: https://fireemblem.gamepress.gg/q-a/theorycrafting-ryu-caeda

Eliwood: https://fireemblem.gamepress.gg/q-a/theorycrafting-ryu-eliwood

Hawkeye: https://fireemblem.gamepress.gg/q-a/theorycrafting-ryu-hawkeye

Raigh: https://fireemblem.gamepress.gg/q-a/theorycrafting-ryu-raigh

Selena: https://fireemblem.gamepress.gg/q-a/theorycrafting-ryu-selena

Sheena: https://fireemblem.gamepress.gg/q-a/theorycrafting-ryu-sheena

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Feel free to request next heroes for the next theorycrafting build!