The initial premise of the Extinction Team was to show the world that mutants had weapons of mass destruction every time that they went into the field. It was a precautionary stance rather than a threat, and the team was made up of some of the most powerful mutants at the time (while also having some villains on it).

So who would you chose as Krakoa's team of walking nuclear weapons, keeping in mind that they don't just have to be powerful, but also menacing? And who do you think would stand a chance against them in the Marvel Universe?

To make the team building more interesting and before someone lists all the Omegas, let's say you cannot use only Omega level mutants or members of the Five, and that you need to include some villains in it to make it more interesting (and scarier to them puny humans).

Bonus points if you're able to match the roles covered by the previous Extinction Team members (leader, telepath, teleporter, tech expert, bruiser, elemental, flying brick, sorcerer and energy manipulator).