Transforming Another into a Cat

Note:
''The cookie thus created will turn whomsoever eats it into a feline (felis domesticus) forever; however, this is a difficult assertion to prove. No records have been discovered though, indicating the spell has ever worn off. It should also be noted that adepts familiar with the spell can easily recognize the cat cookie. For this mages disguise the coolie in some way or crumble it into some other food when planning to use it on a rival sorcerer. The wizard Manannan did just this to a former rival and then kept her as a household pet for both his amusement and the eradication of vermin. It can be assumed that the victim was not amused.