Seth was lucky to find out that aside from a few things happening before they were supposed to, nothing changed from the events of Ironman 3. As a matter of fact things were even easier as Seth had helped to deal with the biggest threats and limited collateral damage to near nonexistent levels.
After the events that had happened with Tony, Seth was approached by Thor asking if he could help him clense the nine realms. As Seth had already told to Thor, he wanted to explore the universe and he only needed the capability and he would be able to improve by leaps and bounds. Before any of that though, Seth told Thor to give him a week to settle some things and then meet him at McCauley Tech. Thor aggreed and was transported away with the Bifrost.
Seth/Jack had woken up in his room in the X mansion and he could sense a presence that seemed to be moving randomly in different areas. He figured this must be Kurt Wagner, Nightcrawler.
[Looks like he decided to visit the mansion. Well this saves me the trouble of having to look for him.]
Seth/Jack walked out of his room and he saw that throughout the mansion there were different spots where he could see dark blue, almost black puffs of smoke along with an indistinct smell of sulfur. These were a result of Nightcrawler's teleportation ability.
Seth/Jack followed the smell of sulfur and eventually got just shy of Nightcrawler's eyeline. He felt the familiar feeling of absorbing the power and immediately teleported his way back to his room. Kurt heard the similar sound of his teleportation and looked behind himself but didn't see anything. He decided to write it off as him being paranoid. After fighting the teleporting pirate a couple years ago he had been more careful of possible teleporters.
(AN: As i have aged the other X-Men to be older, i decided to make Kurt about the age he was in Wolverine and X-men)
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Seth/Jack had been playing around with Kurt's power and he had to say it was freaking awesome and he found a way to use Jean's powers to his benefit. Jack hadn't really felt her power was that strong as most of her power came from being the host of the cosmic entity 'The Phoenix'. Jack used her powers of telekinesis to send out a pulse of telekinetic energy to his surroundings and it worked like the echolocation that bats have but on steroids as he could see through walls.
This Tele-Pulse allowed Jack to use Nightcrawler's power better than ever as he could see a lot more of his surroundings. This allowed him to realize that Kurt wasn't the only absent X-men to return, he also found Wolverine and Cyclops. Jack teleported near Logan's room and absorbed his ability and then right after, he immediately teleported away because with his advanced senses he could tell that Logan could sense him.
Logan opened his door and saw the remnant smoke and smell of sulfur.
"growls... Damn Fuzzy Elf."
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**Meanwhile in Jack's room**
(Phew... That was way too close for comfort, I didn't know his senses were that strong. luckily the smell of sulfur masked my own scent.)
(Also.... HELL F***IN YEAH I FINALLY GOT A LEGIT HEALING FACTOR!!!)
"Now, time to find Cyclops."
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After getting Cyclops' power, Jack now has pretty much every X-men power he needs and suffice to say, once he gets Magneto's power, he'll be virtually unstoppable to any force on Earth. Although more power can't hurt.
Jack has spent his time as Seth in his training room and he was practicing with Wolverine's power. He covered his bone claws with a proto-adamantium-vibranium-uru composite and he found out that his claws are probably just as strong if not stronger than OG Wolverines'. When the claws are out, they look different as well, instead of the silver color, they are a shiny obsidian black color and are also slightly longer.
Seth/Jack had one last power to get before he went with Thor, he is just debating on how to get to him. He could use mystique's power to transform into a guard, but he'd probably have to kill said guard and he didn't really want to do that. Seth/Jack decided to go with the most direct route.
Seth/Jack is now invisible, standing outside the building where Magneto is being held. He activated his Tele-Pulse and saw a bunch of rooms that eventually led to the solitary room where Erik Lehnsher A.K.A Magneto, was just laying down. Seth/Jack teleported through each room until he eventually appeared in Erik's room. Now, Erik couldn't see him but he heard the sound of the teleportation and it reminded him of Kurt.
"Ahh if it isn't the incredible Nightcrawler, come to release me from my dismal prison cell. I have no idea how you are able to remain invisible, but if you're here to free me, I'd request you hurry it up I am dreadfully bored here."
Seth/Jack then teleported next to Erik and leaned down to his ear.
"I'm not Kurt, and unfortunately, I'm not here to free you. You really have no grasp of how powerful your mutation can be, but don't worry I'll make great use of it."
Erik was shocked at the beings words as it implied that he could use his ability now and that he seemed to know a lot about it.
Just for the hell of it, and to shock Erik, Jack looked at Erik and spoke to his mind.
(There is so much more than you know about your capability and I can give you but a glimpse of the full breadth of your mutation)
Erik watched in shock as he saw an eye sized hole being created in the wall of his prison and just briefly saw the still invisible outline of the being who came to him, look through the small hole and then he heard and smelled the familiar sound of teleportation and smell of sulfur.
"There is a lot more I can do with my power than I thought. I guess at least now I have all the time in the world to experiment."
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(Seth and Thor At McCauley Technologies)
Seth is standing in his Apex armor as he just saw Thor appear from the Bifrost.
"My friend, it is good to see you."
"You as well my friend. Are you ready to explore the nine realms?"
"You bet I am."