My fantasy is perhaps more modest. I would purchase a Powerball ticket, win a couple-hundred million dollar jackpot, and then make a telephone call to Gilbert Levin, sewage plant engineer, to see if that amount of swag could put a life-sciences package on the surface of Mars.
You see, the LR (labeled release) technique was developed by Levin to do assays on treatment plant effluent without having to streak plates, which doesn't work if the levels are too low. Levin's LR on the Mars Viking Lander gave a positive life signal according to pre-determined criteria, but folks said, "Nah! That can't be!" after the fact and blamed the signal on soil oxides, a hypothesis that hasn't been nailed down either.
Levin has been wanting to fly a follow-on "Chiral LR" experiment to follow up, but NASA says nothing doing and the British agreed but crumped their South Polar Lander on Mars.
What would happen is that Gilbert Levin would be awarded a Nobel Prize, and I would be remembered as the chump who gave up his Powerball jackpot.
For this to happen I would have to actually purchase one or Powerball tickets, which I haven't done, because lotteries are a scam and the jackpots are manipulated and hyped to get fools to part with their money.