Current Juggernaut finds a Cosmic Cube vs Marvel Earth
Alright Current Juggernaut is weaker and less durable then Classic so he uses the Cosmic Cube to become a True Juggernaut and cuts his ties to Cyttorak and now being a true Juggernaut becomes invunerble to mental and magical attacks. He lose's his force field gets immeasurble stamina and totally indestructible durability and the immune ability to any and all injuries. Incalcuable strength Superhuman speed and Genius I.Q. He also retains the momentum power where when he starts walking truly nothing on Earth can stop him. Also anytime somebody tries to teleport him somewhere he comes right back where he was. He also has granted himself the ability to fly a Supersonic speeds.
You just kind of described Professor Juggernaut. In a What If?... story, Prof. X got the gem instead of Cain. It practically ended up that all humans were the scum of society and mutants ruled the earth. Everybody obeyed Prof. Xavier, no one opposed him. In the end his own X-men tricked him and blew him into space.
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God put me on earth to accomplish a certain amount of things. Right now I am so far behind I will never die.