I clearly wasn't counting on first-rate teamwork when I picked these characters, but I did have a rationale for how they might be able to function reasonably well together. My intention was that Loki would assume a leadership role, rather than working with the others as equal partners. I don't think Amora would have any great problem with that, given that he's more accustomed to leadership than she is, more powerful, and a prince of the realm they both hail from. And between his manipulative skill and her feminine wiles, I feel the two of them could get the other three to act as their unwitting henchmen. Loki would do most of the planning; those plans would then be relayed to Amora, who'd persuade the others to carry out their assignments as personal favours to her. She'd also play peacemaker, should any tempers flare up. So that's a quick overview of how I see my team managing to cooperate with reasonable efficiency.
Reviewing the dossiers on the opposing team, Loki immediately recognises the problem Magneto poses (with all the metal his own team is carrying), and concludes that Stonecutter's engineering skills are the best way to counteract that threat. Using Amora as a mouthpiece, he instructs Stonecutter to devise and build a reliable countermeasure for Magneto as a top priority. Amora presents this as a personal request from her -- an opportunity for Stonecutter to impress her with his skill -- and he's too bewitched by her charms to refuse. (It doesn't hurt that it's in his own self-interest, what with him being equipped with Cyber's adamantium skin and Wolverine's claws.)
Now, there are a few ways Stonecutter could go about this. Iron Man used a demagnetising agent to render his armour immune to Magneto's powers.
Doom was able to shield his armour from magnetism with a force field, and could turn Magneto's power against him by reversing the magnetic polarity of his armour.
Thor was able to absorb Magneto's force field into Mjolnir, leaving him exposed to attack.
And Forge built a neutralizer gun which theoretically would've depowered Magneto, had it been used against him.
I'd argue that Stonecutter's engineering skills appear to surpass those of Stark, Doom or Forge, so I think he could potentially reproduce any of the above countermeasures. What I'm going to propose though is an approximation of something he's made already. As shown in PETER PARKER: SPIDER-MAN Vol 2 #11, Stonecutter was able to build a "secret underground lair of hi-tech machinery"
within a day of coming into existence. Pretty fast work, to say the least.
That being so, a week should be enough time for him to recreate the flying fortress seen in AVENGERS Vol 3 #24-25. Like the previous fortress, it'll be made of stone, to limit Magneto's ability to affect it directly (Interior Alaska
contains several mountain ranges for Stonecutter to source material from). It'll have force fields around it, to make doubly sure Magneto can't affect it or anyone inside. And it'll have defences strong enough to repel the likes of Iron Man, Wonder Man and Thor.
During the final minutes of prep, Loki augments Bedlam's mental powers, as he did those of the carnival fortune teller, Sandu, to ensure they far outstrip those of the opposing team's telepath, Cable.
My team is now primed and ready for...
Gathered aboard Stonecutter's fortress, high in the air, my team surveys the surrounding area through interior viewscreens. Stonecutter stands at the helm of the vessel, manning the controls and monitoring sensor readouts. A few miles away, Joe's team hovers in the air, surveying the battlefield with their own abilities. Within seconds, Majestic spies the distant vessel with his superhuman vision.
He's about to communicate this to his teammates when Cable begins groaning in pain. With his powers increased by Loki, Bedlam has located Joe's team as well -- Cable's telepathic signature in particular stood out like a beacon to him -- and seeing no reason to delay, he's zeroed in on Cable's mind and is bombarding it with an immensely powerful stream of raw psychic energy. Cable's teammates want to aid him, to ease his suffering in some way as he writhes in visible agony, but there's nothing they can do except watch in helpless frustration. The pressure within Cable's mind builds and builds, till his head spectacularly explodes in a shower of white fragments.
Joe's team look on in bewilderment as Cable's headless form falls from the sky, but they're all experienced combatants and know they can't afford to linger. Majestic urges his teammates to follow him, and the group streaks toward the vessel post-haste. Even as they close within a few hundred feet though, Majestic suddenly vanishes in a flash of green light. Unbeknownst to his allies, he's been teleported aboard the vessel by Loki, and bound in shackles and magics which deny him the use of his powers. Amora signals toward Stonecutter, who strides over to the captive Kherubim and promptly guts him with Wolverine's claws.
With a mounting sense of urgency, the remainder of Joe's team assaults Stonecutter's vessel in earnest, but find themselves sternly rebuffed by it's defences. Joe's automatons in particular take a pounding from the vessel's defence-cannons.
Ultimate Tony Stark's mind races: "This technology is unlike any I've encountered. That thing looks like something Aztecs might've built, but it's defence systems are highly advanced... and they keep modifying, compensating for anything we hit them with. If I just had more lab time, perhaps I could cobble something together, figure out a way through... but out here, in the heat of battle..."
Before he can complete that thought, he realises an external force is attempting to take control of his armour. Stonecutter has remotely hacked into the armour's operating systems, and is systematically overriding it's security lockouts. Seizing full control of the armour, he commands the faceplate to slide back, aims a repulsor at Stark's exposed face, and fires it at full power.
Magneto can scarcely believe what's happening. His team spent nearly a week preparing for this battle; they thought
they knew what they were up against, but hadn't planned for anything like this. Three of his teammates are down or missing, the automatons have been reduced to junk, and his powers of magnetism have so far proved ineffectual against the ancient-looking craft. Adding to his problems, the Alaskan wilderness below provides frustratingly little in the way of metal for him to exploit. Rarely has the proud mutant felt so impotent. All of a sudden, his thoughts cloud over, as an overwhelming feeling of drowsiness takes hold of him. From within the safety of the vessel, the Enchantress has cast a sleep induction spell over him. Without his conscious mind to drive his powers, Magneto begins to plummet toward the ground far below.
John Stewart spots Magneto's plight and is about to fly over to help, when Kuurth suddenly appears between them, hurling his hammer directly at the veteran Green Lantern. Reacting on instinct, Stewart has just enough time to throw up a shield construct, but the unstoppable hammer pays little heed, plowing inexorably through the shield and it's creator in quick succession.
With no one left to save him, the slumbering Master of Magnetism continues his rapid descent, eventually impacting the snow-covered ground with bone-crunching force.
"Is that it then...?"
"Yes, I believe it is."
replies Loki. "Why...? You sound almost... disappointed."
"I suppose I am. I just didn't expect it to be over quite so quickly."
"Fret not, my dear. There's still another battle to come. Perhaps our next opponents shall prove a trifle more challenging."