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.
They must silent and keep playing like usual, and nothing strange happens with them. I think that is similar, but the different, in voodoo, we use another thing to connect with the spiritual like dolls or something like that. But in prayer, we don't use that thing, but we only use a spell to invite the spirit. That prayer can be used to invite the spirit, or we can use it to get luck to us, which is not always work because luck will come to the right person.
That is what I see in movies and from what I saw in the past. Perhaps, we cannot believe that because, in our place, that way didn't exist, but in the other places, that way is existing.