To get this adorable kitty cat you'll have to open Goodie Bag after Goodie Bag to get the Unlucky Yarn which will summon your newfound friend. It has a chance of being in one of those , so get to hunting if you want this little guy! It's by far the most adorable pet in the game.
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The Unlucky Yarn is an item that summons the Black Cat. It is a rare drop from the Goodie Bag...