Source:
http://inthexis.stan...vion/index.htmlMost people are aware that "Weakness to magic" effects all sorts of magic. If you do weakness to magic 100% on an enemy and then cast 5pts of fire damage, it is worth 10pts of fire damage.
The guy in the link above discovered that Weakness to magic effects... weakness to magic, and that he can chain spells together to exponentially increase the effects of the magic.
I know that didn't make any sense, so an example:
Spell:
Drain Health 100pts for 1 second
Weakness to Magic 100% for 3 seconds
Effect:
Cast 1 - Enemey has 0% weakness to magic, drain health 100pts, increase weakness to magic to 100%
Cast 2 - Enemy has 100% weakness to magic, drain health 200pts, increase weakness to magic to 200% (since the spell is twice as effective)
Cast 3 - Enemy has 200% weakness to magic, drain health 400pts, increase weakness to magic to 400%
I'm not sure I explained it all correctly, but you get the idea.
He also figured out a way to set this effect on yourself, so that you can chain cast weakness to magic on yourself in combination with something like Fortify Magicka 100pts and get insane amounts of magicka. Finishing it off with a Fortify Magicka 100pts for 120 seconds so that you can go into battle with it.
Check the link for a waay better explanation and examples of it's use.