Untroubled by Darkness is one of those cards that really only works in specific quests, but in those quests is a powerhouse. Global willpower boosts are always good, but the restriction of Dwarves and the "restriction" of Dark/Underground relegates this one to the binder most of the time. Quite a good sideboard card along with Ever my Heart Rises and ally Bombur.
Untroubled by Darkness
Event. Cost: 2.
Action: Each Dwarf character gets +1 until the end of the phase. (+2 instead if the active location is an Underground or Dark location.)
Khazad-dûm #10. Spirit.