Lol this sounds funny, but on a serious note, if voodoo is really real then this is possible for those that can do it ::)but since I don't believe in it as I have only seen this on TV I will say this is not possible.
If this is for real then I don't want someone to try this on me or while I'm playing.
I don't want to believe with this too but if there are gamblers who think that this is effective. I think there will be some testimonials and will say that this has been effective on their side. But until now, I haven't heard any or probably they chose to remain silent.
I think they choose to remain silent, I have seen in a movie that part of that ritual is you should not tell anybody about this secret or it will lose it's potent, but prayer and voodoo are two different things, you can perform prayer on anytime and anyplace but not in voodoo, you have to do it in specific place and time.