Question--on this subject-- is it possible to predicate actions taken based around a surge of Wild Magic in the area where the actions are being taken, whether that shield a Gate opening somewhere else on the same or another plane, or a magical effect going off on a timer, or something similar, to obscure divination?
I ask because it would be relevant in the case of wanting to confuse the results of a lot of individuals who are unwarded by Mindblank taking an action being shielded by the unpredictable nature of it, which is really no more complicated a plan (could happen this day, or could not, no way to tell until it happens) than just not telling your invasion fleet your plans and erasing the memory of everyone who contributed to them until the moment before you initiate them.
Just more... variable.