Increase Intelligence
Increase Willpower
Choose a race with higher Magicka
Choose the Birthsign The Mage
Choose the Birthsign The Atronach
Use Fortify Magicka spells or potions
Wear gear with Fortify Magicka
Use items with Fortify Intelligence
Level up and raise Intelligence
Complete quests or effects that grant permanent Magicka bonuses
Use Altmer for a higher base Magicka pool
Use custom spells with Fortify Magicka
Use enchanted jewelry and clothing with Magicka bonuses