Use magic device

A successful Use Magic Device check allows a character to use a magic item as if your character had the required class, race, or alignment.
 * Ability: Charisma
 * Classes: Bard, Rogue, Assassin
 * Requires Training: Yes
 * Check: The base DC of this task is determined by the value of the item, and modified by the type of emulation the character is attempting. If the character attempts to emulate a specific race, the DC increases by 5; if he attempts to emulate a specific alignment, the DC increases by 10. Emulating a specific class does not modify the base DC. You must make a DC check of 25 + the level of the spell to cast a spell from a scroll if the difficulty mode of the game is set to Hardcore or higher.
 * Use: Automatically applied whenever a character attempts to use or equip an item normally unusable by his class, race, or alignment.