S Rank Scrolls: These were scrolls you would collect from wars, map cap, and S rank mission ( we dont have s ranks on this server so maybe replace this with something else or remove it) and when you collect a set (5 for clans, 10 for non clans) of these scrolls you would gain more jutsu that are powerful, but are difficult to get because of the low chances of getting them from wars and captures. I feel like these are important to give players who have reached level 100 something to farm for but this will require balancing since it adds a lot more jutsu to the table.
Source for S rank scrolls: https://www.tapatalk.com/groups/goa_naruto/s-rank-clan-and-non-clan-jutsus-t202.html