Blizzard is a unique and ridiculously powerful broadsword. It was given to a player by sacrificing one of every boss weapon created by developer Papa, which was one of the tasks given to celebrate his One Year Initium anniversary.
The complete list of items given was: DP Flail, DP Saber, Gilded Rapier, Shadow Kodachi, Execution Axe, Prot Sword, Composite Longbow, Desert Saber, Cossack/Eastern Parrying Dagger.
It is named and modeled after his developer weapon.
"A single, razor-sharp, everfrozen icicle makes up the blade of this commanding greatsword."
- Item ID: 5247490463105024