I think they'll have a problem with Ibuki's magic since it's overly flashy and one sidedly powerful. Multiple magic circles? check. wide area effect? check. Huge explosions? check...
unnnn...suddenly, I just felt a burst of pity for the poor guys doing CG in this series ^^;;
Ibuki's magic. Yes, all the circles are independantly animated.
Haruhi using Soprano.
Imo, Hiragi's magic looks the coolest~ ´ω`) So much emotion!