How do Badlands / Flame's Fury work with Veil the Night's Hunt? How about Trickster's innate "Why Don't You and Them Fight"? Or (other Power that specifies unusual conditions on what can be damaged)?

How do Badlands / Flame's Fury work with Veil the Night's Hunt? How about Trickster's innate "Why Don't You and Them Fight"? Or (other Power that specifies unusual conditions on what can be damaged)?

For Veil the Night's Hunt, deal 1 bonus Damage to an Invader that's already taking Damage. (You can't use it to deal damage to more Invaders than there are Dahan in the land.) For Let's You and Them Fight, damage boosts can only apply to the Dahan and Invader taking damage from each other.
Badlands and Flame's Fury respect limits on "What could this Power have damaged?" This may include caps on the number of Invaders being Damaged, or specification of exactly which Invader(s) are to be damaged.
(For a few more examples of the same basic principle, you can take a look at the Horizons FAQ on boosting damage.)