Strength

       Usage: cast 'strength' <target>: cast 39 <target>
      Effect: See below
        Cost: 25
    Duration: 4 + (level/2) hours
Casting Time: 12
      Target: One MOB or character

This spell will increase the strength of the target by 1 if the caster's
level is below 19, or increase it by 2 if the caster's level is 19 or higher.
Repeated applications will increase the target's strength further.

The classes that get the spell strength are:

magic-user : Level  64 (good)
cleric     : Level  24 (good)
priest     : Level  14 (excellent)
monk       : Level  25 (excellent)
bard       : Level  16 (average)
darknight  : Level  39 (fair)
wizard     : Level   8 (good)
druid      : Level  23 (excellent)
ranger     : Level  45 (average)
illusionist: Level  13 (good)
necromancer: Level   8 (excellent)