This is not financial advice. The tarot generally isn't suitable. Oh, you could work into it in time, if you start now by asking questions that require numbers for an answer. Initially, let it be for things that don't really matter all that much to you. Record your success rate and experiment with layouts, questions, and subjects. You might even create a servitor to assist you in performing this kind of divination. Perhaps in six months to a year of consistent, persistent work, your outcomes could be reliable enough to place some bets.
The Miracle of New Avatar Power by Geof Gray-Cobb provided an incantation for winning contests. There are some PDFs with the NAP relaxation ritual and incantation scripts around. One of these incantations calls on Labezerin (LAH-BEES-EAR-EEN) to "be my mentor and to be by my side and guide me to success as I select the chances in the contest I shall enter."
In typical New Avatar Power fashion, the author cited a letter from a reader who said, "... I performed the New Avatar Power Incantation for Winning Contests. That night I had a very clear dream about filling in football (soccer) coupons. (An English sweepstake or lottery, based on forecasting the results of football matches. --G.G.C.)" She continued, "In my dream I was looking for teams that would draw (tie) to enter them in the Treble Chance Pool. Some of the printing on the coupon was lighting up like small neon signs." She went on to relate how her entry won the equivalent of $750,000 (in 1970s dollars), beating odds of 152,385,619 to 1.
I'm not the gambling type, so I have not attempted to use this incantation. Your Mileage May Vary (Greatly).