Impotence
(Enchantment/Charm)

Range:  5 yards
Components:  V, S, M
Duration:  10 rounds per level
Casting Time:  1
Area of Effect:  One creature
Saving Throw:  Negates

This spell enables the spell caster to render one creature, himself or otherwise, impotent (incapable of sexual intercourse). The material component is a bucket of cold water. The incantation consists of a specific personality (such as "Baba Yaga") who might be unappealing to the creature. The saving throw is actually a check on the disgust the personality generates in the creature. If the creature finds the person repulsive, he fails the saving throw.
Optional effect: during the period of impotence, the creature will attack at -2 and make morale and saving throws at -2. Wisdom, Constitution, and Charisma scores are lowered by 1d3 points each for the duration of the spell. Also, during this time the creature will feel downright miserable.

