Director Shinya Hiratake reveals Captain Toad's secret spin attack:

"This might be going off on a bit of a tangent, but another one of the questions we received was "Why did you include an attack for Captain Toad where he gets dizzy from spinning around?" This action is actually supposed to be Captain Toad attacking enemies with his backpack! We added it in because we wanted to give his backpack another purpose besides preventing him from jumping! We also wanted to add another means of attack besides throwing stuff, for players who have got used to playing the game!"

https://miiverse.nintendo.net/replies/AYMHAAACAAADVHivd927iQ

Check out the link for a video demo (I can't embed on a new thread for some reason). The attack is only in effect when Captain Toad is actually dizzy.

https://www.youtube.com/watch?v=A9OngvC3_zk

Did anyone here notice beforehand? I personally spun Toad in circles until he was dizzy, but thought it nothing more than a little bonus animation.

I never even noticed he'd get dizzy.

Oh wow, never knew this, I just thought it was a cute animation.

Hahaha, the youtube comments. Toad for Smash Bros and his spinning moveset.

That looks OP! Pls Nerf