Are there any spells that provide a temporary increase to a stat bonus? For example, +5 to SD for 1 round/level (or minute, or whatever). I went through the RM2 spell lists, and found nothing except the Monk spells Strength II etc. These don't so much add a bonus, as they provide a multiplier to damage.
What I did find, was spells that allow lowering a stat (Dull Mind, Impair). These spells affect the base stats, not the bonuses. Their durations are on the order of months, not minutes. They also tend to be fairly low level, for example Impair I is 2nd level, lowers 1 physical stat by 5 for 1 month/5% failure. Dull Mind I is 1st level and lowers 1 mental stat by 5 for 1 month/5% failure.
Does anyone know of stat-bonus boosting spells in a Companion, or one of the later systems (RMSS, RMU)?
At the risk of a tangent, has anyone used the alchemist General N spells to create items with bonuses to specific stats or skills? It seems to fit in the vague wording of these spells, but I could see it potentially being very powerful if applied cleverly.