Because of how many clones are created with the Multiple Shadow Clone Technique, the chakra cost is far greater, rendering it unsafe to use for most people other than the Hokage. For this reason, the First Hokage declared it forbidden and hid it away in the Scroll of Seals.
The user's chakra is split evenly between the original and the clones that he or she creates. Making a few clones this way is practical, but if the user makes too many, then the user's chakra is spread too thinly, and that may prove fatal, so the technique is forbidden.
Although the Rasenshuriken can destroy the opponents at a cellular level with countless cuts, it also damages Naruto's chakra system. As such, this technique was forbidden by Tsunade Senju, the Fifth Hokage.
Shadow clone is not a forbidden jutsu however the Multi SHadow clone jutsu is forbidden. Naruto can only use multi shadow clone jutsu because he has a massive amount of natural chakra he would be able to do multi-shadow clone jutsu even without the fox's chakra or sage mode.
The Reaper Death Seal is a Forbidden Jutsu that was invented by the Uzumaki Clan of Uzushiogakure. This technique is quite possibly one of the strongest known sealing Jutsu in the entire Naruto series. It was first performed by Minato, who used it to seal the Nine-tails.
But, in the Boruto anime, Naruto admitted his dirtiest secret when it came to these endeavors -- and it's all due to Kurama's death. The Nine-Tailed Fox died in the battle against Isshiki, with Naruto returning to the Hidden Leaf de-powered.
The Chidori was created by Kakashi Hatake after he failed to apply his lightning-nature to the Rasengan. He intended for the Chidori to be a weapon used only to protect friends and loved ones.
Average users tend to make no more than five shadow clones at a time with the regular version, whereas Naruto will make dozens, hundreds, or sometimes even a thousand with the Multiple version.
1 Kaguya Otsutsuki
As the Ten-Tails jinchuriki, Kaguya had an incredible amount of chakra, far superior to any character in Naruto. This allowed Kaguya to easily use her kekkei mora techniques. She is the only character in the series who was able to create a Truth-Seeking Ball, so huge that it could destroy the earth.
Users. The Cursed Seal of Heaven is one of the strongest of Orochimaru's cursed seals, the other being its counterpart, the Cursed Seal of Earth.
After studying Kakuzu's corpse, Tsunade tells Kakashi not to let Naruto use Rasen Shuriken again because it will permanently destroy his ability to manipulate chakra. Meanwhile, Orochimaru learns of Konoha's latest victory and sends Kabuto to meet with a woman named Guren.
Well, Gaara's Jinchuriki Transformation were referred to as "that jutsu" earlier on. Which means the transformation themselves are viewed as jutsu. Jiraiya might have meant that Naruto shouldn't used his Jinchuriki powers on the mission because he didn't have control over them yet.
Chapter 91 had Naruto explain that if he were to put a color to his power, he'd "say that normally it's yellow" but that changes when his chakra is affected by the Kyubbi. As such, when Naruto's chakra manifests itself into a ball like it does with the rasengan, it looks yellow.
Rasenshuriken is an S Rank jutsu developed by Naruto. Naruto invented this formidable technique as a result of his training to add chakra nature and chakra form to his Rasengan.
Naruto Uzumaki used the Multi Shadow Clone jutsu as a method of overwhelming opponents, creating the Uzumaki 2000 Blows Barrage. He later extended the Shadow Clone's use to create the Rasengan, passing this method on to his student Konohamaru.
Kid Naruto created 1000 Shadow Clones without Kurama: During that time, Naruto could only borrow Kurama's Chakra when he was in a rage.
In the Naruto series, the clones created by Naruto using the Shadow Clone Technique are not physically as strong as him.
It can be used as a means to gather the “raw material” to conceive, but the main body would be required for the actual act. Similarly, if the clone of a male were to engage in the act, there would be no risk of pregnancy since its “essence” is basically just chakra given form. It will disappear with the clone.
For this reason, most ninja cannot use the Chidori safely. However, a user of the Sharingan can overcome these drawbacks due to its heightened visual perception preventing the tunnel vision from occurring and its predictive capabilities making it easier for the user to avoid counterattacks.
It was invented by Kakashi Hatake as a replacement for the Lightning Cutter, which he could no longer safely use after the loss of his Sharingan.
One of the strongest known Kekkei Genkai in Naruto, the Rinnegan is the rarest of the Three Great Dojutsu. This eye holds tremendous significance in the Naruto world and it is believed that those who hold this eye would either bring great destruction or a great change in the world for the good.
1 Baryon Mode
Recently used by Naruto Uzumaki, Baryon Mode is an extremely powerful jutsu that was available to Naruto Uzumaki and Kurama when they were together. This jutsu used their chakra as raw materials to give rise to incredibly potent energy, akin to nuclear fusion, that far exceeded anything seen in the story.
Edo Tensei is easily the most terrifying forbidden jutsu in the Naruto franchise. Originally invented by the Second Hokage, this forbidden jutsu was later discovered by Orochimaru and perfected by Kabuto.