User blog comment:Jojo-a-gogo/ What would your nen ability be?/@comment-1649996-20121113092437

Mine would be:

Conjurer: A long sword with a mouth in the hilt. In exchange for not being able to cut anything, it can consume Nen.

Transmutation: Change the property of Nen into that of "force." Its more for flying slash attacks, boost defense/offense against enhancers.