Soul Blade: Anko

My soul blade originated from the spirit of my dearest friend who became trapped inside of the blade for an eternity

Originally the element was darkness, but this plane has shifted and transformed it, the soul of my partner IS the blade and clearly visible

Normally it takes the form of what looks to be a glowing blade of energy swirling around my arm and sticking out of the palm of my hand, but due to it no longer having one set physical appearance and shape it can form any kind of weapon I desire, even an extension of my own arm, and with infusions of a great deal of my own chakra it can do anything from simply becoming stronger and sharper, to even healing my injuries and wounds

Soul Beam: I use my chakra and gather it and the blade in the center of my palm to form a spiky, deadly mass of energy which I then fire at my opponent, this however cause a decent amount of chakra to be used up and also my blade to have to regather itself back to my body

Soul Bind: Again, I use chakra to stretch out Anko and he will wrap himself around my opponent binding them, if they do break it however then he is dispersed and must gather himself again

Demonic Possession: Anko, although dead his soul remains with me and when I use his power too much he will become enraged and the energy will envelop me, with Anko in control I gain new, unknown powers and my old powers become enhanced

More to come as I become stronger and grow