Yes. However, it is not just removing or granting - I can remove or grant that misfortune regardless of the flow of time.

....In essence, I can make it so that a fragment does not splinter, but is merely changed from what it would be. I control the concept of 'Misfortune' itself - and it is a concept many humans - well, mortals - place almost god-like reverence upon.

...After all, how many humans blame things that happen to them on 'bad luck?' Entire cultures have rituals to chase away misfortune, gods or goddesses that they pay off to stay away for the year.

Thus, to humans, I have an almost godlike power. Because I rule over what they worship, power is granted to me in return.