There is a reason some powers are banned on the site. Either the majority have voted that it be so or it is to far unrelated to the theme of the site. Below is the a list.
Banned Powers
Ghost Related Powers - This is not a Bleach site and there is no veil between human and spirits here. As a result all ghost or spirit related powers are banned from the site. There are numerous powers out there, I am sure you all can be creative and think of something else unrelated.
Powers that Involve Mind Reading or Seeing the Future - These have to much room for meta-gaming.
Player Controlling Power - If your powers forces a person to act against their will, like say force them to kill themselves or hurt others without the person being in control.