First time using a Tactics team. Shoutouts to Oboro for inspiring the needed adaptions for Reinhardt.
Thunder Armads did a lot of work; I would probably use an Aether-Breath infantry green manakete in place of him, as other green armors would eat the Ignis Brave Bow and a double from the Slaying Spear unless you're running one of the QR5 Hector builds or Surtr. Hector's unique C skill is not required. As emphasized in the video, fire was not in season; the stat boost is not required (but would save Reinhardt from needing Threaten Res).
Most red physical tanks should do. Distant Counter not required. Ideally the Tactics bot if not your dancer.
Heroes' IVs:
NY Azura: RES+, SPD-
A. Tiki: DEF+, SPD-
Reinhardt: ATK+ DEF-
L. Hector: Neutral
Music:
Road Taken (Roar) by Takeru Kanazaki (Fire Emblem: Fates)