Alexeara Cansellarion is in his study when he gets the vision from his Goddess, which means he must have fucked up quite badly.
"How big is 'not objectively that big'?"
"How about we just don't do the thing that involves a change to the laws of physics and all that."
"Nearly destroying Dis with a magical superweapon involves a change to the laws of physics," says Nefreti, peeved.
"How about we don't change the laws of physics for something much less significant than destroying Dis."
"If we are not doing anything interesting Nethys will not give us Arazni's Time Stop to do it in."
"So we need to find plans which either cause horrible devastation or don't rely on Arazni's time stop. Much as I would love to cast Arazni's time stop, I'm feeling inclined toward the latter category."
"Anyone know a Wish wording to get ten moments in a Time Stop?" says Morgethai. "Or any other artifact that has a dispel?"
"I have an artifact with a dispel, but…not more than one in a given minute. Hm. I have the start of an idea but I'm not sure if it would work and even if it would I am not sure I like it. And you'll like it less."
He hasn't even heard it and already he dislikes it. "...Well, let's hear it."
"Felandriel, Nefreti, could we have the room?"
And she doesn't want to explain it in front of Morgethai. Great. Now he likes it even less.
They will both be approximately graceful about being ordered out of the secret archmage conference by the mysterious stranger. "She can't help it, it's her entire personality," Nefreti says to Morgethai as they go.
"I can cast a variation on greater possession where I could possess you, and then return control of your body to you. We would have to test it, but I believe this might allow me to cast a time stop and have it affect you. And you could then attempt to dispel the gate… With a greater maximize rod, I can get you eleven moments across three time stops, which should suffice, I think?"
"...And keep this capability of yours secret from all my allies."
"Do I have your word that you won't do anything else while you have me possessed?"
Well, that's not unreasonable of him.
Manohar isn’t an idiot. There’s discussion of whether maybe Hell will send them an archfiend, at this point, but Hell objectively should not do that; single targets are what the enemy excels at. If you want to take their army down, you don’t want to use something extraordinarily powerful and dangerous that is possible to shoot at; it’ll just get shot at. You want to use something that one cannot answer with firepower.
He gets permission to sacrifice a couple thousand people to Deskari with shocking ease. Usually when he asks permission to sacrifice a couple thousand people he gets lectured about how his experiments are expensive and he should buy slaves like everyone else does.
An enormous unholy swarm of bubonic-plague-carrying locusts descends on the army and also on large swathes of Andoran; those who die of the plague have locusts burst out of their body and join the swarm.
Try solving that with a gun.