Katana is a fast distance driver that has been developed for the longest throws with lots of both turn and fade. The Katana is a disc for the open fairways where the disc can be allowed to work to both sides in a large s-curve when it is thrown at the right speed.
Blizzard champion is Innova's very light plastic. Discs made of this type of plastic are therefore extremely susceptible to wind, which can be used for really long downwind throws. In addition, it is also a good option for newer players, or players who do not have as much arm speed as the top players, as the light discs make it easier to release them with higher speed than the heavier versions.