「Granblue Fantasy」Celeste Ater Omega

This setup can be used for full auto as well. I suggest going auto and just share the room. It will save you so much time. Also using Magna/Omega grid is perfectly fine since you get 60% weapon skill boost for Magna/Omega.
Since Yggdrasil and Leviathan is coming I just want to do some records of Celeste Ater and Colossus Ira. Gotta say this batch of Magna 3 is so not fun to fight.
Because of the way debuffs are applied in this fight, class like Lumberjack and Iatromantis aren't gonna be as useful. Imo you kinda need Tikoh if you want to be able to stand in a long fight. Vaccine is the best buff against this boss and Tikoh can apply it constantly since she gain full CA when the boss does a special attack.
Since it's not a V2 boss Horus wouldn't be as useful here. Vira for tanking and Lucio for overall damage is nice. For MC's job, I feel anything is doable.