This is based on a game in chinese culture called 十八骰, basically when 2 dices are the same...points, the 3rd one determine how big the roll is. You can read/watch the manga/anime series Kaiji to see that in action.
So the idea was "What if I can individually alter the possibility of each dice?" Like if I have two 1 now, do I increase the chance of lower half of the dice to aim for a one-color strike, or do I increase the upper half to get a bigger points? That seem to fit the theme "Roll of the dice" since it's literally manipulating roll of the dice.
And...I never came up with the next step TBH. The first idea is gambling against someone, and the money can be used to bought the chance-altering item from a dice goddess or something, then it's stacking attack against a monster or something, at the end I just gave up on setting a goal and try to finish the basic function.
If I have more time (or was more concentrated), I'd make the chance-altering dice disappear upon usage, and try to balance the money intake and outtake, then... maybe I'll come up with a goal during playtest.
Of course that never happen, but anyway, I also wonder what would the finished game be like. That's the beauty of a jam though.