Can Bringer of Dreams and Nightmares combine Damage-dealing Powers usefully with Damage from other Spirits?

Can Bringer of Dreams and Nightmares combine Damage-dealing Powers usefully with Damage from other Spirits?

It depends on ordering. Bringer of Dreams and Nightmares can take advantage of partially Damaged Invaders: e.g.: if another Spirit does 2 Damage to a City, then Bringer of Dreams and Nightmares could afterwards use a 1-Damage Power to earn 5 Fear (because 1 Damage would have destroyed the City). It could even use several Damaging Powers in a row to earn 5 Fear for each! But if Bringer uses a 1-Damage Power on an unhurt City, it will do nothing, and have no lingering effects that would interact with anything done later.
For each Power Bringer uses, briefly imagine a universe where you resolve the entire Power normally. Whenever it would destroy an Invader in that universe, in the real game you earn 0/2/5 Fear and Push it if it's an Explorer or Town. But whatever Bringer does, it doesn't change the actual amount of damage on the piece.