I understand that you can only focus 1 die per adventure, however if I use a clue to re-roll some of the dice I just rolled can I keep the ones I don't want to re-roll? Is this kind of a secondary way to focus? Since the rules says some or all dice can be re-roll Ed I'm assuming I keep what I wanted from that roll. In effect it's like the roll hasn't been completed yet until I can't use effects or clues to keep re-rolling. Am I right?