How's my team?
Brave Roy with 57 Atk, 39 Spd, 31 Def, and 29 Res. His skills are Fury 3, Desperation 3, Threaten Def 3/Goad Cavalry (interchangeable between my Horse Emblem and regular team) and an Atk +1 Sacred Seal. His weapon is Blazing Durandal, His Support skill is Reposition and his Special is Draconic Aura
Brave Lyn with 47 Atk, 41 Spd, 14 Def, and 28 Res. Her skills are Swift Sparrow 2, Sacaes Blessing, Atk Smoke 3/Goad Cavalry, and her Sacred Seal is Quickened pulse. Her weapon is Mulagir, her support skill is Reposition, and her Special is Draconic Aura.
Camus with 48 Atk, 34 Spd, 31 def, and 17 Res. His skills are Darting Blow 3, Desperation 3, Goad Cavalry, and he has a Hardy Blessing Sacred Seal. His weapon is Gradivus, his support skill is Reposition and his Special is Dragon Fang.
Reinhardt with 44 Atk, 15 Spd, 27 Def, and 25 Res. His skills are Death blow 3, Vantage 3, Goad Cavalry, and his Sacred Seal is Breath of Life 1. His weapon is Dire Thunder, his Support skill is Reposition, and his Special is Draconic Aura.
That's pretty similar to my team. If you want to make it better, give camus hone cav and give lyn a brave bow and pair up her and rein so she can quad almost everything. My lyn is neutral and she's my personal support at S rank with her base kit except she uses Brave Bow+ and Breath of Life. With a hone cav and rein being next to her, she has 49 speed on initiation and 58 attack.
Do *not* give Lyn a Brave Bow for Arena. It's good for PvE purposes, but her Legendary Bow is far superior for Arena play. It allows her to bait and kill mages, whereas her Brave Bow limits her purely to being a player phase unit. She's already able to 1v1 every non-Raven Tome user.
Pokemon GO
Fire Emblem Heroes
Fate Grand Order
Dragonball Legends
Dragalia Lost
IV Calc
Heroes