The either side of the main shaft of a Tourbillon Knife is lined with ridges. The lower half of the shaft is the handle, which is yellow, while the upper half is the blade. The base of the blade is sky blue and the tip of the blade is silver. Three increasingly smaller blades jut off to one side of the Knife in an arc. These side blades are colored in the same way as the main blade; sky blue at the base and silver at the tip.
Tourbillon is French for "Whirlwind".
The ground combo of Tourbillon is extremely quick, much like the combos of many of Larxene's other equipments. It begins with a quick, upward slash, followed by two extremely fast swipes in turn, in which Larxene swipes up with one set and down with another. It finishes with an agile lunge forward, in which Larxene points her knives in front of her and spins, ending in a flip and a downward slash with both sets of knives.
Much like many of her other aerial combos, it begins with one simple swipe upward, followed by a swipe down with both sets of knives. It finishes with a mid-air flip, arms wildly waving the two sets of knives about.