Support Center Greetings, Adventurer ***********! Thank you so much for contacting Black Desert Mobile Support, this is GM Orgoh speaking, and It's my pleasure to be at your service to assist you with the Destroyer class use of MP. Allow me to clarify that since this class is based on physical damage, it doesn't use MP at all, so it doesn't need any MP imprints! I hope this quick explanation proves helpful! Please don't hesitate to reach out again if you have any other questions! Regards, GM Orgoh - Black Desert Mobile Support Team