What's one of the most powerful jutsu in Part I?

[Dark Sonic]

I'd pick either Gaara's Sabaku Kyū or Itachi's Tsukuyomi.

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[Your Creepy Stalker]

Either Jiraya's fireball with Gamabunta, or Gaara's sand Tsunami.

 

[Angelic.]

sexy jutsu

 

[Obito the supreme jin]

Lee's Drunken Fist Style or the Hidden Lotus.

 

[Gerkak]

Edo tensei

 

[~Ethereal~]

And, Kimimaro's bones.

 

[Cyber]

Part 1? Kurama's TBB.

 

[The Great Second Hokage]

Leaf village secret finger jutsu

 

[Dęvîa Puęrî]

Gotta go with gaara' giant sand tsunami unless ur kimmimaru at the time no one if caught in it would survive ...

Or Edo tensi lol

 

[LuckyMan]

Reaper Death Seal you peons, the only one hit kill in Part 1.

 

[Tantalus Thief]

Part 1? Kurama's TBB.

we haven't seen TBB until part 2.
OP: Edo Tensei

 

[Cyber]

we haven't seen TBB until part 2.
OP: Edo Tensei

Kurama's TBB was in chapter one if i'm not mistaken.

 

[Lytes]

Sexy Transformation Jutsu

 

[Urda]

It was Itachi's Mangekyou Sharingan ability Tsukuyomi. Only those of the Uchiha blood can counter it (Sasuke).

 

[ChicagoJhawk]

Reaper death seal prob. Most op thing ever.

 

[Natsu Shazneel]

Kyuubi Rasangan

 

[Your Creepy Stalker]

Reaper Death Seal you peons, the only one hit kill in Part 1.

What about 1000 years of death?

 

[Aznkidd]

Reaper death seal is still one of top 5 jutsu in NV.
Just because Hiruzen was too old and used up all of his stamina when he created shadow clones, that is why he cant one shot Orochimaru...

 

[Bad Touch Yakushi]

1.) 9 Tails Summoning (User Obito)

2.) Death Reaper Seal (User Hiruzen)

3.) Toad Oil Bombs (User Jiraiya)

4.) Edo Tensei (User Oro)

5.) Gaara's Sand Tsunami (User Gaara)

 

[BlacLord™]

Tsukuyomi and Amaterasu. (Itachi used the latter on Jiraiya's Toad eso****us tech).

Sand Coffin couldn't kill Kimimaro and ET was incomplete to the point Hashirama and Tobirama had little power to work with. Sand Tsunami and Jiraiya's swamp tech were pretty significant though.