Exalted Chrom

Weapon: Sealed Falchion (+Eff) 

Assist: Positional Assist / Flexible

Special: Noontime / Sol 

Passive A: Distant Counter 

Passive B: Lull Atk/Def / Mystic Boost

Passive C: Pulse Smoke / Atk Smoke / Def Smoke / Flexible

Sacred Seal: Mirror Stance / Quick Riposte / Atk/Def Solo / Fierce Stance 

• The new power of Chrom’s refined Sealed Falchion allows him to bypass the limitations of his base statline (namely his poor Resistance and unimpressive Speed) and operate as a much stronger tank against all enemy types than previously before, denying his foe’s follow-up and providing a consistent (and massive) overall stat boost. An ATK Asset is Chrom’s most generally useful IV set, but +RES may also be worthwhile to mitigate as much magical damage as possible. 
• Although Sealed Falchion’s built-in follow-up denial already helps Chrom avoid a significant amount of damage, this usually won’t be enough to sustain him entirely—especially when facing off against magical damage. As such, utilizing healing Specials on top of this is highly recommended. Noontime is ideal if support from Brave Lucina’s refined Geirskögul is available, otherwise Sol should be equipped instead. 
• Distant Counter makes for a powerful A slot skill choice to provide Chrom the crucial ability to counterattack regardless of range, widening the breadth of foes he can face. His B slot is somewhat limited due to his cavalry movement, but he still has strong candidates in Lull Atk/Def (for increased durability and damage) and Mystic Boost (to further supplement his sustain).
• Pulse Smoke is essential for Chrom’s performance in Aether Raids to shut down setups centered around instant Special activations, but Atk Smoke and Def Smoke are better general options outside of that. Sacred Seals that increase Chrom’s key stats (preferably in the Enemy Phase) such as Mirror Stance and Atk/Def Solo work well here, though Quick Riposte is also useful in case he fails to OHKO an opponent.

Weapon: Sealed Falchion (+Eff)

Assist: Reposition / Flexible

Special: Galeforce / Glimmer / Bonfire / Moonbow

Passive A: Swift Sparrow / Atk/Spd Push / Atk/Spd Solo / Fury

Passive B: Lull Atk/Spd / Lull Spd/Def / Desperation

Passive C: Rouse Atk/Spd / Spd Smoke / Def Smoke / Flexible

Sacred Seal: Heavy Blade / Swift Sparrow / Darting Blow

• Although Chrom’s strengths lends themselves towards a more defensively oriented playstyle, the advantages of his cavalry status (namely access to class-exclusive buffs and exceptional mobility) alongside the massive stat boosts Sealed Falchion provides , lets him pull off a standard offensive set if so desired. A +SPD IV is best to maximize his follow-up potential but if confident in his follow-ups without it, a +ATK IV may be taken instead for increased raw damage output. 
• Galeforce works well when equipped with the Heavy Blade seal to expand on Chrom’s mobility. If a damage-dealing Special is preferred, Specials with a low cooldown—either Glimmer or Moonbow—work well for their frequent activations, though Bonfire is also good should greater damage be preferred. 
• Most offensive stat-boosting A slot skills will function perfectly well since Sealed Falchion’s activation is no longer solely dependent on him taking damage, with his best options including Swift Sparrow, Atk/Spd Push, and Atk/Spd Solo. On a budget, Fury works as well. 
• Lull Atk/Spd and Lull Spd/Def are excellent to further supplement his ability to perform follow-ups and break through enemy bonuses; the choice between the two is primarily up to personal preference. Alternatively, Desperation is a decent budget choice that pairs well with skills that self-inflict chip damage, such as Atk/Spd Push and Fury. 
• Rouse Atk/Spd—or, if that’s unavailable, Even Spd Wave and other offensive-stat boosting Wave skills—are always solid additions and actually work quite well with Chrom, instantly enabling one of Sealed Falchion’s requirements without outside assistance. If refresher support is available, Spd Smoke and Def Smoke become good choices. Aside from Heavy Blade for quicker Special activations, any seal that boosts his key offensive stats (such as Swift Sparrow or Darting Blow) is recommended. 

Weapon: Sealed Falchion (+Eff) 

Assist: Positional Assist / Flexible

Special: Glimmer / Bonfire / Moonbow

Passive A: Death Blow 

Passive B: Chill Def / Lull Atk/Def / Vantage 

Passive C: Odd Atk Wave / Rouse Atk/Def / Def Smoke / Flexible

Sacred Seal: Atk/Def Solo / Death Blow / Sturdy Blow 

• This build retains an offensive playstyle akin to the above-listed set, but focuses more on maximizing Chrom’s raw firepower to ideally OHKO foes—something he can accomplish quite well thanks to his strong base Attack and the effective +10 Attack boost he can obtain from Sealed Falchion. Accordingly, a +ATK IV is ideal to maximize his OHKO potential. 
• Specials with a short cooldown once again shine here for their frequent activation rate; Glimmer scales especially well with his damage focus here, but Moonbow may be worthwhile to assist his match-ups against particularly bulky foes. Chrom’s high Defense makes Bonfire a good candidate too, but activates more irregularly. 
• The playstyle here is relatively simple: stack Chrom’s Attack as much as possible and go to town. Death Blow—whichever version one has available—in his A slot combined with a complementary Attack-increasing Sacred Seal provides a strong baseline, and this can be increased further by equipping him with Chill Def (or on a higher budget, Lull Atk/Def) to debuff the opponent’s Defense. Vantage works decently to grant him some Enemy Phase functionality if neither of the aforementioned are deemed necessary. 
• For his C slot, self-buffing skills that affect his Attack such as Odd Atk Wave and Rouse Atk/Def help make him less dependent on team support. However, if this is unnecessary, Def Smoke also works well when provided refresher support.