What aspect would you say is most closely related to ice and snow? I think breath fits most but I don’t know how. If I reach a bit it could also be space. If I reach further it could even be void. What do you think?

Breath because of the climate connotations works, as well as Space merely because it encompasses everything physical. If you want to get fancy though, you can even argue Light could be Snow and Ice because Water -> Light Refraction, and Rose’s Classic Element is Water. If you have a reason to link them together, you can likely link any Element to any Aspect. Doom maybe because Cold -> Heat Death of the Universe?