I have 2 topics to ask about:

1) In arena, I know that only a percent of equipment initiative is taken into consideration and everything else is base stats. Now my question is this; How does treasured tools affect, are they also taken into account. And, does the Assist Ninja have any effect in arena. For example, if I use Gaara, does he really buff wind attribute ninjas? Or, if I use Minato, does he increase my initiative in arena? Same goes for any other ninjas. Does Tenten increase my critical in arena? Etc.

2)Let's say I'm using Madara[Edo Tensei Release]. We know he clears buffs and shields when he summons his barrier. I have realized that he doesn't clear some effects of main ninjas. For example, Scarlet Blaze's ninjutsu urge works and you still heal when you cause ninjutsu damage. However, what I don't know is that ninjutsu urge also buffs your team's ninjutsu by 15%. So, when Madara releases his barrier, he doesn't clear fire main's ninjutsu urge healing effect, but does he clear the 15% ninjutsu buff? Moreover, I don't know if assist ninja effects are considered buff or not but if they are considered a buff, does Madara's barrier clear assist ninja buffs? Is there any difference in clearing buffs between arena and normal fights? Another example would be someone else clearing buffs and shields without using a barrier. For example, Itachi[Anbu] clears buffs of a single ninja with his mystery. When he uses his mystery, does he also clear assist ninja buffs on that particular ninja?

Thanks in advance.