Thread:SpiritedDreaming/@comment-24857712-20150927024310/@comment-25396609-20160305214410

Problem, btw.

On average, CO2 makes up .04% of the atmosphere. With a 4 meter radius, you would be able to make maybe a few small chips of dry ice if you were lucky.

Oxygen (as with Spirit's semblance) is easy because it makes up 20.95%, and does not need to be concentrated into a solid state.