Board Thread:Questions and Answers/@comment-23.28.29.13-20180701054006/@comment-26447088-20180701202703

Enhancement material for unit's Abilities, such as Overdrive, Flurry Boost, etc. When levelling you generally want to use enough per session to reach 100% chance for a level up, which can be achieved by using two Scroll IIs or 5 Scroll Is.