This patch allows you to play through the prologue of Shadow Dragon on higher difficulties. Enemies will scale up to your difficulty of choice for the prologue's duration. This also allows you to choose the sacrifice and (potentially) obtain Norne on higher difficulties. Changes have been made to Prologue 1 and 2 to help accommodate higher difficulties, such as placing a vulnerary in Marth's inventory, having certain enemies drop vulneraries, and changing the class and equipment of certain