Talk:Index Librorum Prohibitorum/@comment-67.142.130.47-20130715054240/@comment-11571396-20130715081239

 If she was, she would have a huge chance of @#$%ing everything up when Touma needs her most 

Well, actually...

 While you possess the power to destroy the world, you also have a 50% chance of losing to a child in a game of rock-paper-scissors''. It’s almost a miracle that Kamijou Touma has lost twice. His misfortune must really be something ''

Meaning, a Majin's 50/50 restriction  proves to be a formidable advantage when battling Imagine Breaker, and later, the Invisible Thing; since Touma has very bad luck, it tilts the scales in her advantage, to the point where victory is deemed miraculous.

If Index was a Majin, she could sort of helps Touma having good luck.

I think.