FusionDex

Butterki flies around collecting small objects made of metal. Since it wraps them in silk to hang them from its body, it is difficult to tell what it has collected, and even more difficult to persuade it to give them back.

It never lets go of a key that it likes, so people give it the keys to vaults and safes as a way to prevent crime. It has a superior ability to search for delicious honey from flowers.