Adeline's Dice provided a spherical d20 depending on the conjectured Option to your Thomson challenge for n=20. It is a component of her d1 through d100 established.
This is known as the Main Mechanic. This method is https://caoimhedukz049509.59bloggers.com/35167396/how-much-you-need-to-expect-you-ll-pay-for-a-good-dice