You can get it from xgnw packets 10 contract scrolls but they are low drop rate. It does appear in other events sometimes so you might need to check whatever events its at carefully. it c*so be in mega carnival event as well. hope this helps unless others tell you where they located.

You must sacrifice a lamb to our lord and savior daiske to put them in the events.

Other than that, a chance in x-gnw packs.