Need Fail% w/Reroll.
2+ 16.66% 2.77%
3+ 33.3% 11.11%
4+ 50% 25%
5+ 66.67% 44.44%
6 83.33% 69.44%


1/6 squared = 1/36 -
3+ re-roll -> 2/6 squared = 4/36
4+ re-roll -> 3/6 squared = 9/36
5+ re-roll -> 4/6 squared = 16/36
6+ re-roll -> 5/6 squared = 25/36