Illusion dual casting, Kindred Mage, Aspect of Terror.
the first double the magnitude of the spell (the spell is 2.2 stronger for 2.8 magicka cost), Kindred Mage gives +10 magnitude and the some is for Aspect of Terror (but you need to have 50 in illusion instead of 40 for kindred mage)
well i hope this is right
