Does having multiple "Oops! All 6s" stack?

[Assburgers]

FYI, having the Showman joker lets you have cards reappear. I've seen the All 6s card reappear in the shop, but never had 2 copies in hand. Do having both stack in effect (i.e. 1-in-3 becomes 3-in-3 chance) or not?

[srn347]

Yes, it'll double all probabilities twice. The display won't cap either, it'll actually say 4 in 3 chance (no it can't actually overtrigger this way).

[Ronald Brain]

Each Oops! All 6s doubles all probability so having 2 will quadruple it, 3 will multiple it by 8 and 4 will multiple it by 16. Basically with 4 Oops, your lucky cards are guaranteed to proc.

[Assburgers]

Originally posted by Ronald Brain:

Each Oops! All 6s doubles all probability so having 2 will quadruple it, 3 will multiple it by 8 and 4 will multiple it by 16. Basically with 4 Oops, your lucky cards are guaranteed to proc.

So for every oops all 6s, probability increases exponentially by 1 per card. Cool.