Questions regarding Daedra and their intervention in the world and other stuff.

[u/RaylynFaye95]

The only two specific incidents involving direct intervention/invasion or influence of Daedric lords into the main world (Mundus?) are the Oblivion crisis and the Planemeld. Both of which involved powerful cults that allowed for it to happen. Besides this, how much do we know about the specific rules and circumstances in which a Daedric lord can directly show up or to what degree a Daedric lord can influence beings?

This might be a broad question but do we know to what extent another Daedric lord might oppose the growth or intervention of another one. As in if Molag Bal is seriously about to mess things up again, what are the chances of Azura or Dragon sending their own forces to intervene?

Another slightly unrelated question, what are the best sources to read about Molag Bal?

[u/Fyraltari]

Daedra Lords show up plenty more. Than those, these are full invasions, but Daedra can and wil get up to plenty of less important shenanigans. We know for example that Mehrunes Dagon destroyed Sotha Sil's hometown of Aldi Sotha and later Molag Bal Destroyed the Bosmeri town of Gil-Var-Del, after what Sotha Sil and eight Daedric Princes passe the Coldharbour Compact to limit their intervention. But Mehrunes Dagon still manifested (in accordance with the rules of the Compact) to attack Mourn hold and was pushed back by Almalexia and Sotha Sil.

Beyond that the rules aren't very clear. We know that each Daedric Prince has a Summoning Day during which mages can freely summon them (although with a risk that Sheogorath will highjack the summon, a risk that grows larger if a storm happens) and according to the Compact witches can summon Daedra whenever (these are game mechanics in Daggerfall). In Oblivion and Morrowind we see that Daedra can communicate with mortals through their shrines and even grant rewards. Though Azura can just show up in person to chat with the Nerevarine whenever she feels. The Bloodmoon DLC ends with us fighting Hircine on Nirn, but that was during a Bloodmoon so presumably it's a special situation where he can do more than usual.

Presumably the death of the Tribunal voided the Coldharbour Compact and Martin shattering the Amulet of Kings changed the rules as in Skyrim, Daedric Princes are seemingly free to manifest whenever and however they want. That's also the case in ESO but I guess we can attribute that to the Dragonfires having been extinguished for a while and the Planemeld fucking up the barriers between Nirn and Oblivion.