Amulet of alignment change

The amulet is a small circle split into six parts with what looks like white cracks. The amulet it self is silver. 

+ 1 int, dosen't raise if the user already have an intelligence score of 20 or more.

Only has effect on people that are good in the alignment chart. 

The amulet changes the users alignment after this scale.

Lawful good -> Chaotic evil

Natural good -> Natural evil

Chaotic good -> Lawful evil