what if edos could not be stopped by sealing? i'm pretty sure kabuto wouldnt join obito & madara and then what would happen, pretty much the whole ninja world would be PWND because you would have to kill the controller and there would be too many top tier ninjas to defend kabuto while controlling them and dont forget endless chakra. who or what team or strategy could possibly stop him then?
Like someone said above, Amateratsu. Inextinguishable black flames constantly burning you, the only thing to do is hurl into a ball and roll around, unless it's Nagato who can use Shinra Tensei .
nagato could push back those black flames,itachi is an edo so kabuto would have black flames on his side as well,earth users can effectively block those flames and throw it right back,so can gaara's father with gold sand. getting to kabuto would require some serious techniques
if itachi and sasuke could stop kabuto then madera and obito would
you're still missing it though, itachi and nagato would face off against madara and whoever else as a counter, i'm not saying that madara cant stop kabuto, but getting to him is where the trouble comes in