Calm down there Zoom <| sep |> I ' ve fed all of my dupes except one of my Lee dupes , which I ' ve kept to have double Lee rush . In all honesty , though , Guy has sort of made that not as important . In the end , I say the way to go about it is to hold onto your 6 dupes until you have enough to unlock one of their really good abilities or max them all out . With the dupes in the meantime , you can keep them to use in case you would like for example two Tsunade healers or whatnot . I originally kept all of my Naruto Mavericks until I saw I pulled my sixth one . Now I have a fullability Naruto with a 24 cost , and that is some really nice stuff once you get 6 down to a 5 cost . <| sep |> but it is async , so in the end , you ' re saving much more power , cpu cycles and ram with added throughput and efficiency . this is only possible because node . js is async out of the box with complete eco system of amazing libraries like npm . javascript is simply the best thing ever happened to microcontrollers and information tech .