Shinseijū

The Shinseijū (神精樹; Literally meaning "God Spirit Tree") is a Sibling version of the Tree of Knowledge of Good and Evil. Yuri no Mikoto was able to consume it's Fruit resulting resulting her being turned into a Mage that has the power of shape shifting that transforms into a new Ten-Tails.

Background
Using seeds from the fruit of of Tree of Knowledge Good and Evil it was discovered that by fusing massive amounts of chakra—such as that of a tailed beast—with the seed, would then cause it to activate and grow. The result was a tremendous tree with massive amounts of chakra.

Appearence
The Shinseijū is a tremendous tree, which, despite being weaker than its parent, dwarfs the Shinju in sheer size. When viewed from space, the tree can easily be seen. Up close, it is a large leafy tree, with many rope-like branches hanging down. These branches resemble nooses, earning the tree its moniker; "Gallows" (処刑台, Shokeidai). Its trunk is truly enormous, and its roots can spread out for miles.

Chakra Fruit
Much like its parent, the Shinseijū is also capable of producing a fruit imbued with tremendous chakra. In order to create a fruit, the tree must take root on the planet and begin to absorb both the natural energy and chakra from within. Once ripe, the fruit can then be eaten, granting the one who eats it comparable power to that of the Tailed Beast's Jinjuriki. In addition to this, the tree can also produce fruits that grant the user one of its numerous chakra natures.

Chakra
The Shinseijū possesses a gargantuan amount of chakra. Due to possessing the combined chakra of Sun Wukong and Myōbu, the Shinseijū's chakra can take on four known natures; fire, earth, yin, and Wukong's advanced lava nature. The tree has access to two additional natures; water and the beast's advanced boil nature. The tree can presumably produce lightning chakra, as well as magnet chakra.

Tailed Beast Transformation
The result is a monstrous tailed beast form, possessing Ten whip-like tails.