Blizzard allows Amaterasu to create a trail of ice from an ice source to freeze either single or multiple desired targets at once. When a target is frozen, it will stay put for a few seconds before breaking free from the ice. While frozen, a target can also be used as another ice source to freeze other targets or refreeze itself.
Blizzard also has another unique use. At large chasms with sparkling ice crystal floating within, Amaterasu can draw an ice trail over these crystal to coalesce them into large, floating ice blocks that line into a makeshift bridge across the chasm. However, like glass and ice passageway, this bridge is also slippery, and it will shatter after about 10 seconds, making moving across them quickly quite irritating, such as the enormous canyons between the summits of Ezofuji that must be crossed to reach the other part of Wawku Shrine where Lechku & Nechku flew over to. The ice bridge over this canyon is constantly under assault of cannons on the other side of the canyon, and the bridge's slippery surface makes crossing it quite irritating.
To use Blizzard, draw a line from an ice source to one or through multiple target. With the bridge creating brushstroke, draw a line from an ice source over the chasm from the other side to where Amaterasu is standing, or vice versa.
At Wawku Shrine, after fending off her first Great Tengu, Amaterasu approaches a strange contraption that creates a stream of ice and blow that all over Kamui to create a vicious blizzard. Inside the contraption is an object that resembles a horn, but sealed by a demonic barrier. Amaterasu melts the ice covering the contraption's handle on the left, and by striking it at certain moments, the Blizzard machine is deactivated and the barrier is destroyed, and the horn, which turns out to be Itegami's horn, floated out of the contraption and flew up to the dark sky, summoning the ice god's constellation. After completing it, Amaterasu was not only granted with Blizzard, but also the Solar Flare when Itegami summons all the Celestial Brush Gods by sounding a tune with his horn, and Icestorm, Blizzard's upgrade, immediately when she gains the primary technique.
Blizzard has a single upgrade: Icestorm. By drawing the mark X (an X with a horizontal line striking through its center), Amaterasu can create a gigantic six-armed hexagonal ice crystal that rain down devastating icicles, freezing and destroying anything within its vicinity. This Secret Brush Technique is very strong, and will immediately outclass Blizzard upon obtaining of the primary technique. However, Icestorm has a downside: it cannot freeze and coalesce ice crystal in chasms to create floating, crossable ice blocks.
Blizzard is the only Celestial Brush Technique that has its upgrade immediately gained upon obtaining the primary technique, rendering Blizzard immediately outclassed, except for when creating ice bridges over chasms.
When used on animals or people, Blizzard will turn them into two-sphere Japanese snowmen.