[Autumn]

Dark Water's been discussed to get a rework before to not have it be so skewed into taking away an enemy's entire stat investment. This change would obviously accompany that (The new form of Dark Water likely would reduce Status Res I believe was brought up, and perhaps Critical Evade as well.)

But since this thread is about Light Shafts, why does Mass + Brighten actively grief my team, you're making your side of the field a more disadvantageous situation in some situations, and just like my argument with Sanctuary, you should not be able to so easily be able to demerit your team on the simple premise of just trying to help them, anyone who isn't aware of these detrimental effects to their own team will mindlessly use these effects and it is their allies who will be punished for this usage, not always them. This is a knowledge gap that is simply not necessary to include.

Sorry to say but there is not much argument to be had here, Renowner, the fact these tiles still affect allies is outdated, and I assure you if Cinders could affect your allies as well, the argument would be flipped, even if 20 damage a round is arguably not nearly as bad as -15 to hit while standing in a certain tile.