Ok, first of all it's worth noting that while scrolls can be very powerful and are effectively a 'free' spell, the Master spells will still need their charge dance. The easiest way to do this is to use the Become Ethereal shout before starting the charge up. You will remain ethereal for the entire 8 seconds (plenty of time even for the longest charge up) or until you release the spell - you don't break your ghost form simply by charging it up. When your character has done the dance and is holding his hands up in the air still for a while, release. Spells like Blizzard, Firestorm, Hysteria and Mass Paralysis give you a bit of breathing room as you leave ethereal form, but for the other ones make sure you quickly hop out of the fray.



