~150 Magicka for dread zombie.
The rest in Health and Stamina as you see fit.
You didn't miss it. Its really just to taste. The only hard requirement is having enough Magicka to cast zombie spells, which shouldn't be more than 150, ever. You can either invest in it, or joice yourself with a fortify Magicka potion.
To cast it twice in quick succession (with dual perk), restoration potions should do the trick.
~150 Magicka for dread zombie.
The rest in Health and Stamina as you see fit.
You didn't miss it. Its really just to taste. The only hard requirement is having enough Magicka to cast zombie spells, which shouldn't be more than 150, ever. You can either invest in it, or joice yourself with a fortify Magicka potion.
To cast it twice in quick succession (with dual perk), restoration potions should do the trick.