Cube of Fate, Probability of 1 million

ahzu

after doing cube of fate for some time, i start to wonder...

i have already gotten Sadness Card for the 14th time, and not one Estasy Card.

What do you think is the probability of getting lucky out of the "Lucky" Chests?

1%? 0.1%? or 0.01%? anyone of you gotten one before care to share?

From Santuary server...