How does tactical advantage affect UR heroes?

The Tactical Advantage damage bonus applies accordingly and the damage dealt can be stacked. Let’s use the new UR hero, Amaterasu as an example. She’s under the Luminarch x Guardian factions so she can deal bonus damage against Shadowarch and Verdian heroes. On the other hand, she’ll suffer additional damage as well against those two factions, due to how the Tactical Advantage chart is arranged.