The Mayfair Exponential Game System uses a roll of 2d10 for anything.

If the 2d10 roll results in 2 ( double 1s), then it is a critical failure. No reroll.

If the 2d20 roll results in doubles of any kind ( two 4s, two 5s, etc ), then it explodes and rolls again adding the result to the previous roll. If doubles come up once more, then it explodes again... to a maximum of 4 re-rolls.

If at any time during the above multiple re-rolls, the roll comes up double 1s, the rerolling stops and the 2 is added to the previous results.

Suggestion (just an idea)

Example: 1d10!=1d10>2

• Allow 2d10 to explode and compare individual values of each 1d10 to each other and stop if both are 1 ( and add to any previous results )
• Allow 2d10 to explode and compare individual values of each 1d10 to each other and reroll/explode if the values equal each other and add to any previous results )
• Allow 2d10 to explode to a maximum of 5 explodes if none of the rolls to that point have been double 1s