Identity Thief

Identity Thief(变装贼 Henso Tonan) is a rare type of Holder Magic which involves the use of Magic Masks to take the identity and abilities of a certain person(s).

Description
Identity Thief grants the user the ability to take the identity and abilities of a certain person(s) using Magic Masks(referred as Identity Masks). Once the user acquires the identity and abilities of a certain person(s), the person(s) will no longer able to use their abilities and identity, which makes them faceless and powerless. Of course, the theft happens under strict conditions: Additionally, the user gains the same strengths and weaknesses of the victim, which is a major and obvious drawback.
 * The victim must be kept alive. Additionally, if a victim dies, an Identity Mask fades away.
 * The user must acquire the most valuable item of the victim and get a grip on it on either their mouth, hands, or legs.
 * The user must write the personal information(i.e birthday, full name, blood-type and magic abilities) of the victim on the backframe of the Identity Mask.
 * The user must question the victim about their magic abilities, while the victim must answer back.
 * All of the above must be done within an hour.

Trivia

 * This Magic is obviously and majorly inspired by the ability Skill Hunter used by Chrollo Lucilfer of Hunter x Hunter.