Ice Storm

       Usage: cast 'ice storm' : cast 77
      Damage: (6 + level/8)d20 + 20
        Save: Save vs. Cold
        Cost: 35 + level*0.60
    Duration: Instant
Casting Time: 15
      Target: All MOBs in room

The classes that get the spell ice storm are:

magic-user : Level  33 (excellent)
bard       : Level  53 (good)
darknight  : Level  58 (average)
wizard     : Level  28 (excellent)