New Idea:Scroll of Vulnerability:

       The Scroll of Vulnerability could affect foes by making them vulnerable to attacks.

For example, you attack a monster with one of the strongest weapons in Aberoth(such as the Morningstar of Drain Life),and since you used a scroll with your morningstar, you now probably drain more life.Also, the scroll lowers your foes' defense, thus making your foes weaker or more vulnerable to attacks.