Then why put it in the magic tab?
FFFFFFUUUUUUUUUUUU
Because mages have a wide selection of powerful AoE attacks but limited effective single-target spells. Once it's loaded, Hailstorm is basically how bolts were supposed to be to begin with.
Edit: Didn't bother to check if these were the max, but with my lackluster INT and un-upgraded Staff here's my r5 damage:
Non-crit:
[Image: http://img96.imageshack.us/img96/9256/mabinogi20110123010.jpg]
Crit:
[Image: http://img98.imageshack.us/img98/4177/mabinogi20110123008.jpg]
I get 100% critical without an enchanted staff and using my normal range setup... add lizard/stiff to the staff and with 110% crit should be enough to crit on most HM mobs without having to bother with having separate equipment for Hailstorm.