what type of Nen do you think Morau uses?
I'm guessing that he's either manipulazing or matrialazation.
his deep purple ability reminds me of the person in the mafia mansion that created nen puppets to test Kurapica, and it seems that he manipulates the smoke to cover for it...
but it's also possible that the pipe is a matrialiezed item, like kurapica's chain of daeth causing pledges.

other than Kurapica, who had matirilazation or Manipulation nen? we need someone to compare abilities to...