I'm level 81, and I can't do Fire Storm because it cost 800 magic when I only have 480... WHy is it like this? I have master spells but I can't use them
Well you should have a lot of gear that raises your magicka so there's no way that it should only be 480. It should be like 600+ In addition to that you need the perk that reduces the amount of magicka it costs to use master spells, other than that you can't do anything