The only events currently that is geared towards rewarding when using items are charms, refinement, seal scrolls, cave keys, battle armour threads, and summon scrolls. The rewards tend to vary in relation to the item. There are events that asks you to spend stamina but it rewards you indirectly, like PriaseLuka stated.

If I were you, start tracking when events are usually released as its been working for me for the past 4 months, save the items, and only spend it when the events come out per week.

The reason why people are saying beheading kakashi isn't a good choice is because of the lack of teams he can be a part of and he isn't a well rounded ninja. There won't be a recruitment feedback when tendo treasure is covered since they only cover the 2-3 recent treasures and Tendo treasure has been out for several months. Also, trying to get a ninja to 5* from a treasure is difficult unless you have lots of money to spend and luck (I assuming you don't).

You can still try and get him since it seems like you like his character but be warned, your team will suffer since you aren't drawing from treasures that can help your team out. This post was last edited by vi3***@hotmail.com at 2017-7-11 12:11