Aroden nods, and straightens himself up. "I am Aroden, returned as a human and currently fighting to reclaim Cheliax from Asmodeus and the rule of Hell. I think there is likely someone here who can verify my identity, if you wish to do that; I know that Iomedae and Her people are aware. In any case, their army is regrouping and we would prefer they not have a chance to do so, however, I do not wish to kill them because then they will be in Hell and very annoying to rescue from there. Leareth, my colleague, has magic from another world that allows very large portals between planes. We would like to transport twenty to thirty thousand Chelish troops to Nirvana, where they will be out of our way; we can, of course, retrieve them after the war once I know what to do with them." 

The enormous antlers bob. "Will they have food with them? Supplies? Will they be a danger to anyone around? To eachother? To themselves?"

"They do risk being a danger to anyone around them, and ought accordingly be placed somewhere inaccessible if that can be done, but I do not think to each other or to themselves, Asmodeus' order is a very Lawful one. They will have supplies to camp, and some food with them, though perhaps not enough for more than a day or two. We are obtaining aid from neighbouring countries and Leareth could deliver additional food later if that is necessary." 

"I do not know of an area large enough for thirty thousand people who might travel from there that is without any inhabitants," he says slowly. "I can find out whether anyone else knows of such a place, or we can ask people if they'd be willing to leave to clear space. I would expect either approach to take about an hour; can you wait that long?"

Aroden takes a moment to think and then nods. "Yes, we can wait that long. Though, in that case, I think I will leave Leareth here with you and depart to continue other preparations." He probably needs an hour to set up for Leareth's plan anyway. 

"I am going to Teleport around talking to people," the centaur says gravely to Leareth. "I can take you with me if you sit astride me."

Sure, he'll ride the centaur, this is honestly not the weirdest experience of the last twenty-four hours. 

Aroden Plane Shifts back to his hallway-demiplane, since it lands him in a predictable location where he won't be seen and lets him do one last quick scry of the army's position and level of preparation from his crystal ball, and then he Teleports to Ostenso, gets out a large map in one of the planning tents, and sends someone to wake and assemble Leareth's mages while he sketches out a plan and starts assigning locations. 

As the mages trickle in, he buddies some of them up with his high-level wizards, for Teleports and Invisibility, and notes down their placements, laid out in a giant circle well away from the camp's perimeter. Leareth's Farseers can See exact locations from the map and mentally share them with the wizards, even if they can't See the cloaked army.

There aren't enough wizards who have Rings of Sustenance and thus today's spells to match with the number of mages Leareth said he needed for this, so Aroden lines up a dozen of them to quickly Teleport into place himself, once it's closer to the time of. Precisely an hour from now, he wants all of them in place and with at least twenty minutes of invisibility for flexibility of timing; Aroden can cast it to last forty-two minutes with Extend Spell, so he won't want to start yet. 

If they don't end up getting approval from Nirvana, well, at least they'll have two dozen Velgarth mages and a lot of wizards already surrounding the camp for a more conventional attack. 

Nirvana is not really considering it in question whether they'll do this, they just have to figure out where. Eventually they settle on a mountain valley from where the trails out are impassable this time of year but not actually miserably cold down in the valley itself, owing to some hot springs, and Leareth's centaur gallops around through the valley explaining to everybody that it's recommended they evacuate and explaining why. Several people are worried that it'll be scary for the captured army if there's no one there to explain what's going on, but are successfully persuaded that if in their panic they kill some people then 1) those people will be dead and 2) they'll have more to heal from. 

Eventually Leareth's centaur Teleports out of the valley with an enormous flock of creatures alongside him, birds and foxes and rabbits and lions and a dragon. "Can your friend cast a larger than usual Dimensional Lock spell to prevent the army from Plane Shifting back or Teleporting around within Nirvana?" he asks as he does this. "I would not expect many of them to have Teleport locations here but there are combinations of magics that would permit it, and we'll have to kill them, if they start attacking people."

Leareth is pretty sure his friend can do that, they briefly discussed plans there, Aroden said he could handle it, and he knows from his studies with Khemet's researchers that using Wish to extend the range of an existing spell is a relatively safe usage. In terms of telling the captured army what's going on, they have access to some people with extraordinary telepathic range, one of them can be brought over when the army is dropped to make an announcement. 

Is it all right if Leareth very quickly goes around the edges of the valley and casts some of his own kind of magic on some rocks? (He wants to do a quick-and-dirty partial version of the set-spells on a permanent Gate threshold, it'll make it a lot easier for him to anchor on the destination quickly and pull off an interplanar Gate on this ridiculous scale.) 

Sure! The centaur can Teleport them around for this.

Leareth puts down half a dozen anchor points for his Gate, and then he'd better transport himself back, via a much tinier Gate, so he can prepare for the final portion. 

He's going to collapse in a puddle after this. Having two dozen of his mages shaken awake to hold the perimeter of the enormous concert Gate will cut the power requirement from him for the initial threshold, nearly half a mile wide, down to something he can handle. Still, he's the one doing the heaviest lifting, since as the only one who's actually been to the valley, he'll be handling the interplanar search component and the destination threshold. 

Vanyel, waiting for his turn to be rendered invisible and Teleported, greets him. :I'll be next to you, 'Fandes thinks she can help me node-boost you for the harder bit: 

:Thank you. I am sorry to disrupt your rest: 

:No, this is amazing. I love this plan. I just wish I could see the look on Asmodeus' face when his entire army gets kidnapped to the Neutral Good afterlife, it'll be glorious: 

Aroden pops into place next to them a few minutes later, takes Vanyel's arm, makes him disappear from sight and mage-sight, and transports him to the second-to-final spot next to Leareth. 

Then he's back, using a Pearl of Power for one last Teleport to bring Leareth himself into position. 

Leareth doesn't probe the camp, it might be noticeable if they have the right kind of defences, but he does passively open his Othersenses, as he reaches out to form a cautious Mindspeech link with the mages on either side of him in the circle, slipping into concert-rapport. 

There's a lot of magic in the camp; the soldiers are being equipped with items that keep them alive and make them stronger, and with magic swords that can cut through shields, and with use-activated items that will let them fly or deflect spells. Most of them are asleep but there are plenty of sentries; some pass quite close.

It all looks quite well-organized and competently done, and he's going to have to move fast so as not to give them time to react when the Gate goes up. Fortunately, if he does this right, when he does his collapsing into a puddle there won't be any Chelish forces left in this plane, except for maybe a few sentries who happen to have been outside their perimeter. 

:Yfandes: he sends. :Can you give us the cue: 

:Of course: And she can find each mind belonging to a Velgarth mage, and only those minds, and include them in a private Mindspeech countdown that won't be detectable to anyone inside the camp unless they have a lot more telepathy-detecting magic than she thought - and even if they do it'll be about two seconds' warning. 

:Three, two, one - NOW: 

It takes about a second and a half for the mages, linked in a concert-meld and all Adepts experienced with Gates, to fling up an enormous threshold. Which is very detectable as powerful magic, and also visible as a strange white glow to the naked eye, though its casters are still invisible. 

Leareth reaches for Nirvana, and for the anchor-stones he left there, throwing his mind toward the destination, profligately pouring energy into the spell as Vanyel feeds him from a node. It takes maybe two seconds to find it, and he frantically builds the destination threshold, as soon as it's complete the spell will snap into place and dump the entire army there where they can't do anything about it -

The army noticed this and is freaking out! Some people Teleport out immediately. Some try Dispel Magic. 

Well, they were never going to do it fast enough to catch the wizards with good reaction times. Dispel Magic rips at pieces of the threshold on their side, but it's very stable once up, and there are a lot of mages to rebuild it. 

The instant he dropped Leareth, Aroden Plane Shifts himself to Nirvana, and from his random arrival point, Teleports to the mountain beside the valley, grabbed from Leareth's memory. He draws out a diamond for his Wish, to extend the Dimension Lock spell to cover the entirety of the valley and everyone inside it. He worked out the wording for it as a contingency decades ago, trapping a large number of people in a given plane is useful in many circumstances, and it's a pretty safe use case anyway. 

Leareth's vision blacks out a little as the power drains through him, not replenished quiiite fast enough by all of Vanyel's efforts. 

- and then the Gate completes and snaps into place, and the ground is suddenly gone from under the army's feet, replaced by different ground somewhere else entirely. Thanks to the placement of Leareth's stones near the walls of the valley, for most of them it's a drop of somewhere between three and ten feet.