Is it a physical power (ie Superhuman Strength or Superhuman Speed) or psionic (ie Imperceptibility or Telekinesis) or magical (ie Personal Spellbook, etc) or divine (ie a MythPower)?
Does it require anything verbal, physical contact, eye contact, mental contact, a certain hand gesture, or an object?
“…Judge not what a man has done, but judge what he could have done if he was a different bloke altogether. For art thou a leper? And a leper can changeth his spots…” --Rudy Wade, Misfits (Series 4, Episode 8)