Collector: I can see several flaws in your plan, first of all how would we even combine our powers, and if this was done by edgyhead we don't even know if it would work
I recommend just making a new star, I could use a time stone to accelerate the star's aging until it can't burn anymore, then we just add gasses and minerals inside of the sphere, then boom! It contains the blast from the star forming, you can remove the barrier, and your people can see the sunrise again