Grand Hero Battle - Legion

(You'll be able to watch how this team destroyed Legion's legions in the video I'll upload in a few days on my YouTube channel, I am going to put a link here.)

Even though the enemy uses a lot of the new buff-reversing skill which destroys the concept of a Horse Emblem team, this team helped me beat infernal mode with ease.
It is really important to use Reposition and Swap in order to avoid the debuff skill. Also keep in mind that Cecilia and Reinhardt are glass cannons who have an annoying tendency to die just by being looked at.
Team members:
- Xander:
Xander with Quick Riposte is the star player of this team because he can ORKO all Legions in the enemy phase.
- Reinhardt:
Reinhardt is really useful for dealing devastating damage (I command you to call me Emperor of Alliterations, Timme I.) to most of the enemies and he is able to tear great holes in the opposing army.
Cecilia: Cecilia is the one to tank the blue mages, especially the annoying mounted ones. She carries a Gronnblade Tome in order to abuse the cavalry buffs.
Camus: Camus is really viable on this map to. He is able to double many of the enemy units and take them out. I used him for spawntrapping the opposing reinforcements.

Kagero - +atk seal, axebreaker, hone atk
Celica - +spd seal, moonbow, hone speed, darting blow, reposition (use axebreaker instead if not +spd nature)
Azura - hone attack, wings of mercy
Linde - desperation, glimmer, breath of life

Axebreaker Kagero kills the Legion on the right. Put Linde on the defensive tile to kill the red mage. Blue mage will suicide against Kagero. Have Celica kill the Legion that spawns on the bottom, then Linde and Kagero work together to take out the blue mage (while breath of life heals Celica back to full hp), then Azura sings Linde to safety. After the enemy phase, move Azura to the far left and Linde in the same direction. Celica goes to the bottom and Kagero bottom-right just outside of the danger zone. One Legion should follow Azura. Linde and Kagero kill the lance cavalier, Celica kills the archer. From there, continue to hit the two remaining Legions while singing/ repositioning to safety.

Infernal: Tharja, Nino, Eirika, Azura (link at the bottom)
Lunatic: Tharja, Nino, Kagero, Azura (link at the bottom)

1st. Kill legion on the right side with fully buffed Nino and wait for the blue mage to attack Nino and get killed.

2nd. Kill the new blue mage at the bottom with Nino+Azura. Kill the new Legion at the bottom.

3rd. Kill Legion on the left and the sword cavalier at the bottom with Tharja.

4th. Kill the archer and the spear cavalier with Nino. Kill red mage with Tharja.

5th. Kill the blue mage with Nino and finish off the last Legion from the top.

(lunatic)
https://www.youtube.com/watch?v=tguSQG1WAEc&t=1s

(infernal)
https://www.youtube.com/watch?v=RnGgHgbXc-w

You WILL need a red with axebreaker, ryoma was mine, but it can be any sword lord. The a nino or another blade tome user, a dancer, and a blue mage, i used robin, but im guessing reinhardt and linde could work too.
Nino takes out the rightmost legion with a dance, and azura gets out of the way using a reposition, then the blue cav will smash himself and die against the little monster.
Move to the center of the map.
Kill the new legion with ryoma (should have axe breaker), and the blue mage with nino.
Move robin to the lower left defensive tile and engage the red mage.
The cav, the mage and the bow will all die trying to kill him.
Robin hits the leftmost legion to disarm aegis, after that nino strikes him then finish him with ryoma.
Move your units to engage the upper legion and the blue cav on the defensive tiles, and should be easy.
Now enjoy your 3 legions.

Sanaki with Axebreaker and Glacies/Iceberg will be a perfect Legion killer, meanwhile Michalis, better if he has lunge in his B slot, will finish off most units with the help of Ninian's dance. Ursula is just to tank the blue horse mage and finish off the blue horse unit

On the first turn use Sanaki to kill immediatly the Legion on the right and then send Ursula a space in front of Sanaki to tank the blue horse mage

On the second turn kill with Michalis the blue mage that arrived while moving both Sanaki and Ursula out of the blue horse mage's range (use Ninian's dance for Ursula)

On the Third turn use Sanaki to kill the left Legion then send Michalis, thanks to Ninian's dance to kill the blue horse mage. In this turn Sanaki will probably lose the ability to OHKO the Legions since she will tank the red mage's damage.

On the fourth turn use Sanaki to severely injure the Legion that just spawned in and use Michalis to finish him off (i use Michalis with Luna so he pretty much OHKO everyone). After that use dance on Michalis to send him against the red mage. Keep Ursula out of any enemy's range or it will be game over

On the fourth turn the blue knight will shift places with Michalis that remains unharmed. Use Ursula to finish him. Use Michalis to attack the archer and swap places with him while also weakening him. Then use Ninian to weaken the archer a little bit more in order to let Sanaki take the last hit

On the last turn Michalis will have Legion weakened without dying. Use Sanaki to finish him off and the Lunatic Grand Hero battle will be won

My setups are

Sanaki 5* Lv 40 +hp - def
36 Hp
51 Atk
26 Spd
13 Def
34 Res
- Cymbeline
- Harsh command
- Glacies
- Triangle Adept 3
- Axebreaker 3
- Hone attack 3

Ursula 4* Lv 40
33 Hp
32 Atk
30 Spd
17 Def
28 Res
- Blárwolf
- No support skill
- Growing Thunder
- Death Blow 2
- Seal Res 2
- Threaten Res 3

Michalis 5* Lv 40
46 Hp
50 Atk
26 Spd
35 Def
19 Res
- Hauteclere
- Draw Back
- Luna
- Iote's Shield
- Lunge
- Threaten Def 3
- Hp+ 3 seal

Ninian 5* Lv 31 (don't remember bane and boon)
34 Hp
34 Atk
27 Spd
19 Def
23 Res
- Light Breath +
- Dance
- Luna
- Fury 3
- Escape Route 3
- Hone Res 3