Are the dual-factions of UR heroes applied as one or separate instances when activating Factional ..

Since UR heroes have two factions, each of their faction assignments will still count towards the aura bonus. In this example, we have the following heroes in the same party with 3 URs:

* Lucifer (Luminarch + Shadowarch)

* Iset (Luminarch + Verdian)

* Amaterasu (Luminarch + Guardian)

* Athena (Luminarch)

* Izanami (Shadowarch)

That’s why if you check the Factional Aura bonus, the team above activated the x4 Majority Vigor (+12% ATK and DEF) and x2 Minority Vigor (+8% Final Damage) These bonuses are stackable as well so consider activating this important passive bonus when building your team