Blizzard is a Legendary elemental-type fruit in Blox Fruits. It is expensive and hard to obtain Blizzard fruit. It costs $2,400,000 or 2250 Robux and has a 1.8% chance of being in stock, so it will take some time to show up in a shop. It has a spawning chance of 1.24%, so there is a low chance that you will find it while playing.
Blizzard is an extremely strong and great fruit. You can use it for PVP and fighting bosses because it has great damage and a lot of stuns. What is also great about this fruit is that you can create a lot of good combos inside the game that will dominate. So if you have this fruit, make sure that you use it. There is a high chance that it will get nerfed in the future.
What combo you will use depends on your in-game situation, who you are fighting with, and what you want to achieve. It is best to spend some time testing all possible combos, and by doing that, you will learn how to use what works best for you and also how to counter it. So go and test Blizzard in a game.