We can currently re-use dice rolls (sort of) in macros/abilities using the $[[0]] syntax described here , but currently can only return the text of the roll. It would often be very convenient to be able to perform mathematical operations or otherwise treat these die rolls as actual numbers, like [[$0]] + 4, or [[ $[[0]]d6 ]]. If this has been suggested before, point me in the right direction and I will delete this and upvote it!