What's the most statistically improbable thing you've seen as a QM?
This disastrous array of roll in a free loot even in my quest (as stated
>>6006616 >>6006617) is a good contender.
They're not clearing a DC of 70 with 12 rolls (something 3 rolls have 50% chances of doing), resulting in the roll array being less-than-1 percent of the bad contender.
Knowing that the roll is not working on a best-off measure, it's even worst.