The longer you maintain you are weaving, the greater the stamina cost becomes
THE BASICS: You'll enter the spell-weaving state by activating its knight online gold icon, which if not automatically added to one of your hot-bars will be found under the Abilities tab of your spell book. At this point you'll enter the first of six distinct stages.
Right from the start though, you'll begin to lose stamina - the longer you maintain your weaving, the greater the stamina cost becomes. Should it be fully depleted, you'll very rapidly begin to lose health instead, and if you're not careful you can easily wind up dead.
Before getting into some of the specifics on the various buffs and debuffs that occur while weaving, I find it's worth going over some of the ways you can maintain the spell-weaving state for longer periods so that you'll be able to see its full potential.
Food and drink grant a stamina bonus and is a good thing to keep a supply of in your inventory. Chances are you'll find quite a bit of both as drops, and if not larger towns and outposts will have a merchant where they can be purchased relatively cheaply.
If all else fails you can take up the Alchemy profession so that you can make your own or purchase some from other alchemist.
