Well i did a lot of test before with Ao when i first pulled him i would recomend you to go for tobi GNW kiba fire main and AO but since you don't have GNW kiba use orochimaro. You will get him soon but that the best line up for a f2p took me so long to make that formation orochimaro will not be the best replacement for GNW kiba but he will have good synergy with that team.
There is also a guy uses a formation on server 1 with tobi, earth main, shikamaro, jigo he do really well in pvp and fought him couple of times. This alos can work really well.
This post was last edited by xShutDown at 2016-12-12 22:30