I am playing a drow Hexblade warlock, and so far, I am enjoying myself a lot. I was trying to decide what spell to gain for my 8th-level Mystic Arcanum (at warlock level 15). I saw the maddening darkness spell, but I am confused a bit.
Does maddening darkness affect everyone in the area, including the one who cast it, even if they can see through it using the Devil's Sight eldritch invocation?
Best Answer
Devil's Sight can see through Maddening Darkness, but doesn't protect you from the damage
Excerpted, Maddening Darkness has the following effects:
As the first effect of Maddening Darkness is simply to produce magical darkness, that particular aspect does not affect a Warlock with Devil's Sight, who can see through magical darkness without issue.
However, the second effect does not depend on the darkness, it simply applies to the same area (it's in a separate paragraph from the description of the darkness and doesn't reference the darkness at all, either). Anyone starting their turn in the area takes the psychic damage that the spell deals - seeing through the darkness doesn't change that, and the spell has no exception which makes the caster immune. You could even illuminate the area using a light-causing spell cast at 9th level, but that would not prevent the damage.