Myrrh

• Preferred IV: +DEF or +ATK / -SPD
• Weapon: Great Flame / Lightning Breath+ (+Res)
• Assist: Reposition / Varies
• Special: Glimmer / Bonfire / Ignis
• Passive A: Distant Counter / Atk/Def Bond / Fury 
• Passive B: Quick Riposte / Renewal / Flier Formation
• Passive C: Hone Fliers / Goad Fliers / Threaten Def 
• Sacred Seal: Iote’s Shield / Deflect Missile / Close Defense

Myrrh is inarguably the best thing to happen to flier emblem since the game’s release. With her, not only do fliers finally get a non-seasonal magical attacker, but her stats and skillset are perfect for countering flier teams' biggest headache: bow users.

While a Distant Counter/Iote’s Shield set can be reliably run on any unit with reasonable Defense, Myrrh takes this a step further and utilizes her breath weapon and sizable Defense stat to shut down Brave Lyn’s Mulagir. In addition, no bow user in the game is capable of doubling or quadding a +Def Myrrh at all.  But that isn’t all -- Myrrh's sizable 31 base Resistaance also enables her to shut down threatening units like Reinhardt, Nowi, and Linde.

If Distant Counter is too big of an investment or if Myrrh is -Def, then she can free up her A slot by running Lightning Breath instead. This leaves her a little more vulnerable as she can be easily doubled with her low Speed stat, but it opens up her A slot and grants her a free +4 Defense or Resistance and +5 HP if you refine her weapon. With Fury, this evens out to a 39/38 Defense/Resistance spread -- 45/44 with Fortify Fliers. This turns her into a more standard tank similar to Sheena.

Due to the necessity of Iote’s shield, Myrrh has a harder time running Heavy Blade and so she prefers Glimmer or Bonfire as her Special. As previously mentioned, Glimmer will always activate in Enemy Phase, and Bonfire will prime for activation in the following Player Phase.

Iote’s shield is definitely preferred for her seal slot so that she can function as a wall for arrows on your flier  team -- however, Deflect Missile is also an option that will earn more points in the arena while keeping her alive vs brave bow users, though they will leave her with significantly less HP.

• Preferred IV: +DEF or +ATK / -SPD
• Weapon: Great Flame
• Assist: Reposition / Varies
• Special: Bonfire / Aether / Ignis
• Passive A: Atk Def Bond / Steady Stance / Fury
• Passive B: Quick Riposte / Renewal
• Passive C: Hone Dragons / Threaten Attack / Threaten Def
• Sacred Seal: Heavy Blade / Guidance / Close Defense

This set highlights Myrrh’s amazing synergy with dragon emblem, which allows her to play a heavily-destructive Enemy Phase tank role, enabled by an optimal +Def -Spd IV set.

While one would normally want to pick up Distant Counter to synergize with Great Flame, Myrrh’s inherent weakness to bows means that she’d need to lose out on her seal slot to simultaneously run Iote’s -- and if she’s operating with a team of dragons, it’s likely that she has an ally with Lightning Breath to cover her ranged weakness already. It’s far better then to focus on optimizing her Great Flame for melee encounters and leave the Distant Counters to her allies who would prefer to run Lightning Breath.

Granted, they won't have to worry about potentially unfavourable melee matchups, as Myrrh excels at melee encounters. When attacked on Enemy Phase, she has a staggering Defense of 44 with Atk / Def Bond, which can be pushed up to 50 with Fortify Dragons and 53 with Defense +3 in her seal slot.  This all but guarantees that her Great Flame’s Sweep effect will activate, making it almost impossible to OHKO her outside of a few high damage red magic attacks.  

With Quick Riposte, Myrrh is also guaranteed a follow-up attack of her own, meaning that, if she activates Heavy Blade (with her 56 Attack), she will be granted a guaranteed +22-25 damage Bonfire proc on the second retaliation. For this reason, Quick Riposte is her ideal B slot, as running any other skill in her B slot wastes her damage potential -- though you can run Renewal for a bit of recovery for longer battles if you’re more interested in a sustaining tank.

Bonfire is still generally recommended on her, though her ideal special really boils down to player preference. Due to the Great Flame, Myrrh generally cannot be doubled, so 4 cooldown specials (such as Ignis) will not proc on the first engagement. This does mean that after she’s attacked, however, she could then have Ignis primed for a massive +36-44 damage beginning her next turn. Aether could also be primed (again, if Heavy Blade activates) for a Player Phase attack, which would heal her up for her next engagement, though it would do notably less damage.

Her C slot is variable, but if using her in a dragon team, Hone Dragons is ideal on her as Myrrh doesn’t care about utilizing the Speed buff herself since she generally cannot be doubled. If she’s running Heavy Blade, she may be in need of an Attack buff from her fellow dragons, but overall she benefits the least from Hone when compared to dragons such as Nowi or Young TIki.  Threaten Atk is also decent on her, as it will make her Heavy Blade more likely to proc, though giving up class specific buffs is a questionable choice.

This set relies on Heavy Blade being run in her seal slot -- though if you’d prefer to mitigate her damage potential for team synergy, she can run Glimmer instead (for Enemy Phase activation) or Bonfire (for following Player Phase activation) and run the Guidance seal, which takes advantage of her flier status to offer her team more mobility. Close Def is a bit more basic, but gives her some leeway on Great Breath’s restrictions, particularly when facing down high Defense units with good Speed like Amelia.

• Preferred IV: +DEF or +ATK / -SPD
• Weapon: Great Flame
• Assist: Reposition / Varies
• Special: Bonfire / Aether / Ignis
• Passive A: Atk/Def Bond / Distant Counter / Fury 
• Passive B: Quick Riposte / Renewal
• Passive C: Threaten Def / Def Ploy / Hone Spd
• Sacred Seal: Heavy Blade / Iote’s Shield / Guidance

Myrrh’s Atk/Def Bond/Heavy Blade set rivals her Distant Counter/Iote’s Shield set in utility for mixed teams and either can be run effectively, depending on the team composition around her.  If she’s teamed up with someone who can handle archers and other ranged counters, then the first set increases her damage potential; if she is the ranged counter within a team then this build will prove more effective.

While Myrrh benefits immensely from the +6 Defense buff that is generally granted to her by dragon or flier teams, she can still function just fine on her own in a mixed team while offering her infantry/armor allies Guidance support.

Quick Riposte should always be taken and Great Flame should always be utilized (unless, of course, Myrrh is -DEF, in which case it may be necessary to consider a Lightning Breath build. Stay far away from a Heavy Blade set if Lightning Breath is used, as Myrrh's Attack will be lower than is generally necessary for Heavy Blade's activation condition). The rest of the build depends on what purpose she will serve on a team.

Threaten Def helps to bolster activations of her Great Flame's Sweep effect, which may be necessary against heavily armored teams if she’s not receiving a +6 Defense buff. Threaten Res makes her attacks more potent, and Hone Speed supplements her allies with a widely-appreciated Speed boost.