Board Thread:Versus Debates/@comment-26998824-20151210004253/@comment-25122992-20151212120643

Curse of Hatred wrote: I may be wrong about this, but there's nothing to suggest MS users can't use PS, however the strain it would put on their eyes would probably decrease it's effectiveness, as well as decreasing the amount of time they could use it for. With EMS, sharingan techniques are stronger and there are no negative side effects, thus it would be a lot easier to stabilise Susanoo into PS. No, you're definetely not wrong. Kakashi is the main proof of MS user capable of using PS, although it may be possible just thanks to the Six Paths Power added, but the fact Kakashi had no EMS does not change. Perhaps, you need some amplification source to stabilise Susanoo without fainting from exhaustion after several minutes of using it. There's also Indra, who definetely had MS and could use PS in battle effectively, but nothing suggests he had superior MS akin to innate EMS or some powerup cheats (Hagoromo bestowed his power to Asura only).

Unfortunately, we're talking about Itachi, who never demonstrated the capability of PS creation (at least, in the cannon media). And even if he could, he wouldn't bother to use it against such an opponent as Tobirama, cause I don't thing Itachi'd be able to keep PS active very long, and if Tobirama survives this interval of time, he'd easily oneshot completely exhausted Itachi afterwards.