A stone god, isekai novel?

[LesserCodex]

I remember coming across a book that involved an isekai of sorts. A young man gets summoned to another world and becomes part of a god of stone or something. It's a system world, and the god is very weakened, only giving him a small skill at the beginning, allowing him to cover his arm in stone.

I remember the cover involving the MC with a stone arm with green energy? I don't know the name. Any help is appreciated.

 

[Siegburn]

I think you are referring to this: https://www.scribblehub.com/series/423773/im-the-strongest-cheat-lord-in-the-whole-world/

 

[LesserCodex]

Not that one, sorry, he ends up becoming part of the god who's lost his power. It becomes a voice in his head with the system.