Rietsu Control

Basics
Rietsu control is basically the control one has over they'r rietsu, it is already known that shinigami and hollow have control over their rietsu but this is training that lets the user manifest their rietsu into almost anything they want (Ex: Wings, Swords, etc.)

Advanced Training
There are some users who can manifest their rietsu into more complicated items. Some are able to manifest other people from their rietsu for distraction purposes. Then there are users who can use their rietsu as a gun and shoot rietsu bullets at someone, the bullets are as hard as real iron. There is almost no extent to rietsu control and it is basically a wepon of imagination.