From what I had been told *a long time ago* from our local warlocks,
to jinx someone is not actually means to cast a spell on him, it means to look at him with a warlock's
eye, so-called "bad" eye. So it's not a spell. It's more like the first, simple stage.
But if a warlock (witch) is powerful enough, it may go bad, like in his case.
Look, he wrote "everytime"....