The better use is to cast Fighting Chance if your opponent has a horde of blocking creatures, to hopefully win the game with a Chance Encounter on the battlefield
This mid-cost version loses some of the card draw and isn't quite as low to the ground as the budget version, but it adds high-impact characters that will help turn the corner quicker starting turn five
My personal method is to just own four copies of every Magic card in existence so I can use them to represent the cards, but use whichever method you're comfortable with
The potential for shenanigans here is infinite, with even average rolls still giving you 10 extra mana to play with on future turns
You can search for "Holon Energy WP" in the compendium-ex, as this is a similar card to Bent Spoon, and they have a bunch of rulings about it
Why not take a look at the Mega Shine Secret Missions, Paldean Wonders Secret Missions and Fantastical Parade Secret Missions.