I'm looking to run some old Avalon Hill board/ tabletop games in Roll20. However they have odd dice that do I not know how to make in roll 20. Its 3d6's, but they come up with odd results. The first D6 is White and has a 1 on 1 side, a 2 on two sides, and a 3 on 3 sides. The other two dice are black, one has 0-5 on its sides, the other has 0-4 with a second 0. The die results make a number 10-39, the white die corresponds to 10, 20, or 30; while the black dies are added together to reach a result of 0-9. The games are built around the idea that die results are not all equal chance. But I am not familiar enough with Roll20 to know how to implement this. Any help would be appreciated.