This is Amka's main accessory, her "Fristal Staff".
https://www.artstation.com/artwork/PXLzlB
When held upright, it's a sturdy walking stick, quite useful for traversing snowy forests. The rope lets her cast spells while walking.
Held upside down, she freezes a sharp ice blade which lets her slice wood like without carrying the weight of a heavy axe. The bark started to peel off but the connection is renewed each time.
Serving as her walking stick and main heavy tool, the "Fristal Staff" can freeze an axe blade when held upside down
Sadly, Marmoset couldn't export a 3D viewer of the animated blade. However this is how it looks like in the editor.
Early tests for a snowflake freezing effect, which I baked a map for the ice blade.