Weapon Trial 3 lv65 Team lv45 [Sword of Convallaria] ft. Edda

Disclaimer: The items and Characters used in this replay are not the most optimized option. I used the level 47 team because when I was trying, I leveled up to 47 from 45 but anyway it's not important to be at level 47, level 45 team will work just fine. Also, some of the engravings were not necessary. The most important thing for this draft is to make sure that everyone is wearing "Temptation of The Devil" [Tarrot] and "Redemption of The Judgement" [Tarrot] on Abyss.

This replay is just a showcase of using Edda to pass the lvl65 Weapon Trial 3 content with the lvl45 team. It is possible to substitute some character out if you guys feel like to but there needs to be a complete team with a specific task.

Tanker and Debuffer: I set the stats of Abyss to the point that the boss will only attack her (generally if you're using the same comp you don't have to do anything). Abyss also acts as the main debuffer in this draft. You may notice that I rarely move her from that position.

Col is the MVP in this weapon trial 3 because of his trait that allows him to act again after clearing those units. Paring him and his team with "Temptation of The Devil" [Tarrot] will benefit the team in the long run. The more units we clear, the stronger our team is. As for the boss, he will get stronger and stronger if we clear his minions, that's why we need "Redemption of The Judgement" [Tarrot] on Abyss even though we have Edda's basic attack.

Healer: I used Angel, not only can she heal in AOE but she also gives magical defense for all of her allies with "M.DEF Command" [Aura/Skill].

Buffer: I used Gloria and Edda since they're in my main team and I don't want to waste any resources on other units. The setup is to have "Solemnity" [Aura/Skill] on Gloria along with Guiding Gleam [Support/Skill] on Edda. With these two skills along with "M.DEF Command" [Aura/Skill], your units should be tanky enough to survive all of the boss's DMG. Edda helps a lot on breaking the boss's Shield.

Noticeable Tactics are "Urgent Order", "March Command", and "Flag of Convallaria".
Actually, It might be easier to use "War Horn" instead of "March Command". As I said earlier, this is not the most optimal solution for this trial but it's my solution that I just wanted to share with you guys.