Shuriken Shadow Clone Technique

The user creates a thousand shadow clones from one shuriken, striking down the enemy. This is a technique that combines ninja tools with ninjutsu. Compared to normal shadow clones, clones of material objects are said to be on a far higher level. There is no need for preparations beforehand, like stocking up on shuriken, yet since the shadow clones are real and not illusions, all the shadow blades that fly around are equally lethal. Because the clones form in just an instant, completely evading them is next to impossible.

Kasai Uzumaki's Variation
By combining this technique with Summoning: Lightning Flash Blade Creation, Kasai can undo the small seal he had placed on the shuriken. Causing it to unleash 10 more shuriken, making it's number 11 in total. If he uses the shuriken shadow clone technique with this, he can cause all one thousand of the shuriken, due to being exact physical replicas of the original, to unleash 10 more shuriken, quickly multiplying it's number from a thousand to ten thousand. Making the attack nearly impossible to dodge especially if used at long range.

This technique can be taken even higher if Kasai initially uses ten shuriken, using the shuriken shadow clone technique to make them multiply into ten thousand, and then make the ten thousand multiply into a hundred thousand by unsealing ten shuriken on each of them, therefore launching an assault of a hundred thousand shuriken that is nigh-impossible to dodge, especially if used at long range. Making it powerful enough to take down a large portion of an army or very large opponents. When utilized this way, the technique can be considered S-rank. Finally, chakra flow, nature transformation, shape transformation, and other ninja tools can be used with the shuriken to make it even more deadly. This technique can be used on other ninja tools such as kunai, senbon, arrows, knives, or even spears as well.