It is definitely the Magicka harming them, or it could be pedantry behind the curse because they seem fine in brightly lit rooms, you just rarely see them in one.
Also it could just be Molag Bal being a dick, daedric curses tend to have symbolism behind them. For example if memory serves right the reason werebeasts transform at night is because Hircine is honoring Lorkhan/Shor/Shezar who’s corpse is the moons, but not the necromancers moon that’s manimarco the god of necromancy.
It is definitely the Magicka harming them, or it could be pedantry behind the curse because they seem fine in brightly lit rooms, you just rarely see them in one.
Also it could just be Molag Bal being a dick, daedric curses tend to have symbolism behind them. For example if memory serves right the reason werebeasts transform at night is because Hircine is honoring Lorkhan/Shor/Shezar who’s corpse is the moons, but not the necromancers moon that’s manimarco the god of necromancy.
I always assumed they prefer dark spaces because they have permanent night eye.
Like Riddick