Lucina

Attack is chosen as the boon so that she can deal high damage when retaliating, and HP is the bane so that she can more easily reach brazen range

With the combination of brazen attack/speed with the sealed falchion, lucina at neutral speed can reach a 65/48 attack and speed.
Combined with desperation, lucina easily defeats almost any non lance unit. Even speed wave boosts this offence up to 65/54, guaranteeing that she can double almost anyone without sword breaker.
Glimmer is the recommended move as it increases her already powerful player phase attacks, but it can be replaced by moonbow, draconic aura or Luna.
The three charge specials should only be used if she is being attacked to get into brazen range, where’s the two charge ones should be used if reciporacal aid is being used to get her into that threshold.
Even speed wave is chosen so that she can be hit on the first turn, then retaliate on the second turn, but this can be replaced with odd speed wave by preference.
Reciporacal aid as mention above can be used to get her into brazen range, but it can also be used to heal her if she is taking too much damage during enemy phase.
As alternate options, gale force could be used in place of glimmer. If Lucona gets hit once in enemy phase and is faster than the opponent, then she is guaranteed to get it on the retaliation, assuming she doesn’t OHKO the opponent. This build is lacking in damage due to replacing glimmer with gale force though, and is more resource heavy.
Lastly, she pairs well with good tanks to protect her during enemy phase, and buffers to allow her to really shine on player phase.
For teammates I would recommend bulky green units like Dorcas or male grima, bulky blue units like lukas, Effie or brave hector, and good buffers like Sothe, Brave Veronica, or Brave Lucina.

After a long time, Lucina who’s formerly my #1 waifu because of smash bros finally decided to come home. Unfortunately she’s +def, -atk but I really wanted to keep her. This is going to be my build for her. Because Masked Marth (the other fellow falchion user) already runs the healer build, I wanted to make Lucina completely different.

For her weapon I went for the sealed falchion refine. It will giver her a +5 boost to all stats. The effect is extremely powerful. It also allows her to slay dragons. The health requirement is pretty easy as all you need to do to activate it is get out of full hp.

For the assist skill I went for reposition. It is extremely useful due to its moving utility.

For the special I went for moonbow. Although it’s overrated I think it’s still good nonetheless. Her default aether is good, but the problem is the charge time and anti synergy with skills like her sealed falchion or brazen skills. Though I might switch back to luna since 3 turn cooldowns are something I know how to roll with.

For the A skill I went for brazen atk/spd. It’s like a upgrade of her default defiant spd. The difference is that with brazen you have:
-A dual buff
-Better activation requirement
-A invisible buff meaning it can stack with visible buffs
-Not vulnerable to panic skills unlike defiant skills.
What else is that brazen atk spd will stack up extremely well with her sealed falchion. Giving her +12 in atk and spd.

For the B skill i’m going for desperation. With it she can double attack first before the enemy. Fury will help her get into desperation range.

For the C skill I went for threaten def to allow her to hit hard.

As for the seal i’m going attack+3 to fix the -atk problem.

Overall Lucina is a pretty fun unit. Although she’s -atk and will have some trouble against the more easy to merge Masked Marth, i’m still gonna use her regardless. Lucina used to be my #1 waifu due to smash, but was later replaced by someone else. She’s now number 2. Although she don’t shine as much compared to my number 1, she’s still a cool waifu. In a similar way to Ike I only use Lucina cause she’s one of the fe characters I know from smash 4. Not cause she’s good unit.

My very first 5* unit, free summoned. Lucina carried me through pretty much the whole game, and without a doubt deserves my Summoner Support spot.

Recommended IVs: +ATK / +SPD and -RES

A semi defensive / aggressive build for Lucina focusing on dishing out has much damage as possible, whether close-up or countering from afar while maintaining her HP. This build is expensive, and requires premium skills but is worth it in the end. The basic idea of this build is to place a teammate next to Lucina for the Bond Falchion effect to buff ATK for Heavy Blade and SPD to ensure a double. After the first combat (preferably during Enemy Phase), assuming Lucina doubles and procs HB, she will take out one enemy and has the ability to immediately devastate another with a fully charged Aether powered by Wrath during the Player Phase. Lucina will then heal up most, if not all her health and be ready for the next round of combat.

In my opinion, Lucina is one of the most versatile heroes in the entire game, since she can serve as an offensive sweeper, dragon slayer, combat medic, and defensive tank given the right build. I personally cannot imagine having a team without Lucina or Masked Marth since dragons are running rampant in Arena as of now. She may have been overshadowed by Ayra, Soleil, and now Karla for the longest time, but her lower BST is patched up by the Bond Falchion refine (which is better than Sealed IMO), granting her basically a 20 might legendary weapon. Bond Falchion becomes even more relevant when Lucina is adjacent to a buff bot such as Brave Lucina, and can easily take advantage of those buffs on top of Bond Falchion's effects. Basically, she has the potential to stack a crazy amount of buffs given the right set-up. Finally, Even Speed Wave allows Lucina to catch up to the likes of speed demons such as Ayra and Karla even without Bond Falchion's effects. On even turns, she gets 44 Speed, which can be increased further to 48 with Bond Falchion.

Now, all there is left to do is to get merges to take her even further.

I do not have this build but as soon as I get a lucina this will become my main build for her I just love that she can attack anyone while lowering all of there stats at the same time. She will become my front line attacker that is an exelent debufer as well.

Strong as a stand-alone warrior and gets significantly stronger when next to an ally on both player phase and enemy phase. Able to fight enemies of any color next to her s-class support Cherche.