The tornado suit basically turns mario into a Mario version of Vortex Bro, Mario can create small tornados now, the suit only apears in NSMB:TSOF, currently, and not much else is known about it.
Games its in[]
New Super Mario Bros.:The Search Of Fate
Price at shops[]
The current price of the Tornado suit is 130 Coins in NSMB:TSOF.