Roll a six-sided die, and if you roll a 1 or 6, add 1 card from your Deck to your hand that requires a die roll. If you roll a number other than 1 or 6, roll it again, and apply the appropriate effect. ● 1 or 6: Return this card to the hand. ● 2, 3, 4, or 5: Place this card on top of the Deck. You can only activate 1 "Diced Dice" per turn.
How to Get
Basically unless you roll 1 or 6 on the first try, congratulations, you've trolled yourself
That skill Duke has that makes it so that your first dice roll will always be 6 might be good for this card.
33.3% chance to get the effect on the first try
11.1% chance to get this card back to the hand
55.6% chance that this card is returned to the deck, resulting in a -1
The 11.1% chance can be broken down further:
3.7% chance that the effect will work next time
1.2% chance that the card is again returned to the hand for a second time
6.2% chance that the card is returned to the deck the next time
The 1.2% chance could also be broken down again (0.4%, 0.1%, 0.7%) but all these scenarios suck because it is way too slow already.
In conclusion: The chance that this card is a -1 is over 60%.
The saving grace is a card called "That Six". If we're getting that card, the chance that this card works on the first try will be 100%.