(sorry for my broken english) Hi, here is the basic rules of my game system : You roll a few D10 dices (as much as you have in you Competence) and each dice equal or lower your Attribute is a Success. You can re-roll each "1" to try to add more Success (exploding dice). If you have at least as much Success as the Difficulty, you are victorious. I've translated this in roll20 like this : /r ?{Competence}d10!1< ?{Attribute} For a dommage roll, you have a few D10 dices depending of the weapon you use and each dice under your Strength make 1 dommage. /r ?{Dommage}d10!1<?{Strength} But here is the tricky part : when you make a critical hit on an attack roll (4 Success or more), you can re-roll ONCE every failed dices (every dice OVER you Strength). On a real table, it's easy, you separate your dices and re-roll the failed ones. On roll20, i can't find a way to re-roll the "1" (exploding dice, you can re-roll as long as you make a "1") AND re-roll once every dice that is not a Success because it's 2 separate rules. Can you help me ?