Any character with a score above 0 in Use Magic Device may use
the skill. Only thieves and bards are allowed to take points in
it.
A character with points in Use Magic Device can use Scrolls and
Wands that are normally not able to be used by their class. The
items show up with a yellow tint that indicates they can only be
used via use magic device. When these items are actively used, they
trigger the skill resolution.
Skill is equal to the character's skill + 5([Charisma/2]-5)
Difficulty is equal to the level of the power being activated
(specified in the spell/item) * 5.
Use_Magic_Device_Difficulty is equal to Skill - Difficulty.
Use_Magic_Device_Roll is a random 1-100.
If Use_Magic_Device_Roll <= Use_Magic_Device_Difficulty, the
spell is cast successfully.
If Use_Magic_Device_Roll > Use_Magic_Device_Difficulty, the
"charge"/item is used, but instead of its intended effect,
the user takes 1d6 points of Magic Damage per level of the power
being invoked.