I'm not sure what you mean by karma in this case, but I wanted to note that the word "supernatural" is very often misused. Once you start prodding people about what they mean by "supernatural", you quickly discover that they don't know what "natural" or "physical/material" mean, much less what "supernatural" means, and the whole conversation descends into grumbling.

Here's one definition of "supernatural order" [0].

[0] https://www.newadvent.org/cathen/14336b.htm