Protagonist síndrome, in reality 99% people will died if try to be like the mc, the realistic way is be in the shadows training to be strong and Take advantage of the memories of your past life about Marvel but well this a novel/ fanfic so screw those things good luck with the story
Suggestion:
Make MC able summon people, group of people, organization, etc., (where His/Her/Their/It Universe or Timeline is destroyed/erased) from Shinobi-Verse.
Hopefully he doesn’t go around giving chakra to people to create an organization without a way to secure absolute loyalty. We saw how well that worked out for sage of the six paths.