Every jutsu has a weakness.

[Lightbringer]

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so you're claiming zetsu knowledge>Itachi

Guess Itachi isn't as smart as people say then

 

[Baka Sennin]

itachi dickriders ignore the fact that to be 'invincible' itachi needs to be in susanoo, and it drains his stamina in just minutes and costs him his eyesight. two weaknesses right there

 

[Neonian]

Every jutsu does have a weakness.