Can a Potion of Strength be used in combat after the die has been rolled, or does the player using it have to use it before he rolls the die? Similarly, the Ghoul and the Druid can discard a follower (defeated foes for the Ghoul, and animals for the Druid, I think) to add to their strength. Do these have to be discarded before the die roll, or can the player wait to use them after the die is rolled in case his roll is insufficient?
Thanks
Bruce