Tailed Beast Ball

The Tailed Beast Ball is the ultimate attack of a tailed beast. To form the attack, they gather both, and , shape it into a sphere, and then compress it inside their mouth. The chakra needs to be balanced or it will backfire. The black and white chakra needs to be kept at an 8:2 ratio respectively. The power of the attack is also relative to the power of the user. The tailed beasts' jinchūriki can use this ability, though they need to be in their full tailed beast forms. Should the jinchūriki lose control to their tailed beasts, they can perform this technique despite not being fully transformed, as seen when Naruto in his four and six-tailed forms. Even without a full transformation, the technique is capable of destroying three Rashōmon gates without losing any of its momentum. A fully charged Tailed Beast Ball can create an explosion that is larger than the Hokage Monument and the mountains around it, as seen during the Nine-Tails' attack on Konoha.

In the anime, Naruto in his six-tailed form was seen firing a more concentrated beam of chakra as well as lobbing several spheres at once while fighting Pain.

Minato Namikaze based the Rasengan off of the Tailed Beast Ball. Killer Bee observes that the process for forming a Rasengan is the same as forming a Tailed Beast Ball. However, the addition of chakra rotation is necessary to control the Ball without being in tailed beast form.

Trivia

 * Both the Two-Tails and the Three-Tails (in the anime) performed elemental versions (fire and water respectively) of the Tailed Beast Ball; the Three-Tails is able to fire two at once.
 * Shukaku uses Wind Release: Drilling Air Bullet, a jutsu of compressed air mixed with chakra from its gut instead of drawing together raw chakra, similar to the Tailed Beast Ball. However, Killer Bee implied that all tailed beasts can do the Tailed Beast Ball, and Shukaku simply wasn't out long enough to perform it when he fought Naruto and Gamabunta. In Naruto Shippuden: Ultimate Ninja Storm 2 Gaara forms a Shukaku head to launch a Tailed Beast Ball (by mixing sand and chakra) to take out Deidara.
 * According to the Eight-Tails, using this technique feels very much like throwing up.