Hi pein,
My recommendation is to save your seal scrolls for Kage Treasure at lvl 70. The other treasures are okay, but if you save for Kage Treasures then you will eventually be a step ahead of everyone.
I also recommend that before you power up, buy anything, or use anything, always do so within the time frame of an event. So for example there is Limited Refinement Event, Seal Treasure event, recharge event, etc. Always remember that the more you can stack in benefits, the better.
Also, try not to miss easy exp and power such as Daily missions, Weekly missions, Strong Approach, and Team Instances!
Lastly, if you don't already have it, Jonin Medal is a good investment if you are ever thinking of recharging and spending, but get it during a recharge/spending event so you get additional rewards! =>
~Jib This post was last edited by Jiburiru at 2017-5-24 01:18