Board Thread:General Discussion/@comment-6747015-20130812042346/@comment-129.21.143.199-20130917013612

You don't need to put even a single level-up's worth into magicka if you get level 100 enchanting and make armor with 100% total reduction in cost for Conjuration spells. It would be advisable if you're playing a mage anyway, especially since it's not something you can do right off the bat, but don't worry about the cost of master spells because many mage characters will have lvl 100 enchanting by then anyway (especially conjurers with their bound weapons that cast soul trap).