Grand Hero Battle - Clarisse

Cecilia raven, TA, goad cavalry
Élise, Wrathfull, assault, hone cavalry
Reinhardt Luna, goad
Ike qr2, heavy 3, aether, threaten ATK.

Move ike to the left, bait Green mage, Elise below him and the other 2 always outside of danger zone near Elise. When the red cav moves in next to ike its when you need to move ike to the bottom left and engage with rein and cecilia. After that the AI go all in and totally misses on lethal. Reinhardt will take a hit from The blue mage but you kill everyone the turn After that.

I Guess you could change the team having a healer, a red vantage or QR2 min powerhouse, blue range and a colorless check

This is the team I used for the battles besides infernal. This team is somewhat for people who are free to play. Xander gets rid of pretty much every unit while Jeorge helps. Priscilla helps while Azura sings. Azura can be replaced with with Olivia and Priscilla with any other healer, although I'd recommend a calvary healer. Jeorge can also be replaced with a quicker archer such as Setsunna.

any horse healer with calvary att buff and any dancer with spur attack. Any tanky armored red unit with distant counter will do as well. Reinhardt needs to be near horse healer to get the buff and 1shot most of the enemies. ocasionally, xander may need to attack first for reinhardt to finish them off

https://youtu.be/jq96e0Xw060

The only real problem here is to clean up the green mage on inferno and the lunatic is not that difficult if you just bust through the right side with a strong unit. Bait the green mage on the left corner and everything else should be fine given that you take out the blue mage on the right side so the only thing you need to do is bait the mages and thats about it. https://youtu.be/jq96e0Xw060

1 - Tharja 5☆ (+atk needed!): Darting Blow3, Spur Res3, Moonbow, breath of life seal
2 - Olivia 4☆: Hone Atk3, Fortify Res seal
3 - Sharena 5☆: Spd+3, QR2, Fortify Def3, Luna, Swap
4 - Olivia 4☆: Hone Atk, Hp+3 seal

Strategy:
1) Place Sharena under the breakable wall with one space between and her partner Olivia on her right. Destroy the wall with Tharja, dance for her (from below) and position Tharja on the tile over her Olivia's starting position.
2) Get Sharena in the left corner and place her Oliva on her right (in Green Mage's range). Now put Tharja over Olivia, dance and move her to Olivia's left side.
3) Position Sharena under Green Mage and kill with Tharja from the bottom right (Don't attack with Sharena! It's crucial to get her there because she needs the BoL heal!). Dance for Sharena and swap her Olivia's positions. No one should be in Clarisse's range now. End your turn.
4) Attack Clarisse with Sharena (Luna) and finish her with Tharja from the tile below Sharena. Dance from left for Sharena and weaken the ninja from the tile under him. Dance from the right for Tharja and finish the ninja from the tile on Sharena's left.
5) Now kill the remaining units using your Olivias to dance.
Congratulations on your 2k feathers and another 4☆ Clarisse~