Vulcan,Magneto/Prime & 8th Day Juggernaut run a gauntlet

They get restored there powers and stamina.

1.X-Men- Colossus,Cyclops,Gambit,Storm
2.Avengers- Hercules,Vision,Iron Man,Wonder Man & Spider-Man
3.Defenders- Savage Hulk,Valkyrie,Gargoyles,Namorita,Luke Cage & Sub-Mariner
4.Gladiator & Superman
5.Silver Surfer & Drax the Destroyer/Infinity Watch/Power Gem
6.Current Thanos & Fallen One

No idea...but they definitely whoop ass until 4. 5 probably stops them.

They get to #5

Originally posted by Galan777
They get to #5

Agreed.

Who is Magneto Prime?

It's Magneto at the prime.