What are the deadliest combinations of jutsus?

[tyltyl]

Mine that I can think of?

Thousand hand buddha and perfect susano'o: perfect defenses that could destroy entire armies with ease

Flying Thunder God and Kamui: combination of traveling through dimensions and getting from one spot to another is almost impossible to counter

Hashi's level mokuton and Falling meteorite jutsu: Mokuton can create huge shield and can split the meteor to avoid hitting you and killing those around you.

Shadow Clones and Flying Thunder God: Getting around and getting past an enemy's defense

Senjutsu and Rinnegan: Being able to sense and predict a person's movements and is the perfect balance of physical and mental abilities

Shisui's KA and multiple Shadow clones: with many eyes on an opponent it's difficult to avoid getting trapped in the genjutsu

 

[Unbiased]

Edo tensei deidara. He quite literally can destroy an entire village in one move. His suicide technique covers 10km (6.2 miles). That in combination with shinra tensei would take down an entire village in a matter of seconds.

 

[Kaneki Kun]

Hmmmmm how bout this

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With this

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[JasonTheArgonaut]

Kirin kamui just like Obito kamui'd the uchiha fire

 

[TobiramaWaterStyle]

Coral Palm to restrict movement and then Bijuu Dama.