I took MCL (mystic crystal lore) as my first realm ability on my light eldy, then followed with mastery of magery and wild power to increase my critcal hit chance and damage. When your eldy has WP5 every shot has a 39% chance to crit, and when you couple that with an extra 15% damage, that makes one huge nuke.
My record was 7 crits in a row, and I only noticed that because I was watching the combat window and rolled it back to count once I had my *** safely in the tower. Cant remember damage totals but I remember thinking that I was pretty damn tuff!!!