A conceptual weapon's theory of singularity?

Does it matter if it makes sense or not? unless you plan to make the plot realistically scientific based down to the smallest detail then don't worry and continue the novel based on its already built 'facts'

 

Of course, I got one like this right on my table.

 

You mainly gave a bunch of descriptive bullet points rather than links of cause and effect to help understand the big picture. It sounds unreasonably OP as stated, but it's hard to give you a real answer without a grasp on the big picture.

 

The only thing that I get out of your description is that you want sword shaped plot armor.

 

It's nonsense. Just stick to your average nonsense and don't try to make it like some science fiction.

You have this [sword thingies] that is bad ass and makes you invincible but the bad guy can summons a [thingie] that is more bad ass because of more [tomato sauce]. Your invincible sword got defeated because you need more [tomato sauce].

Replace stuff in the bracket with cool sounding stuff.