You don't have to use it just for winning - consider sports betting, you can definitely place multi-million dollar bets, on the team that isn't a favorite, then

You don't have to use it just for winning - consider sports betting, you can definitely place multi-million dollar bets, on the team that isn't a favorite, then use your Havana Ray to disturb a couple key players - make millions, repeat. Short a company's stock - melt the brains of their c-suite. When the news comes out, you'll make millions.