Masked Delivery

Rosalie is planning to host a fancy ball as a fundraiser charity event. She would like to have a pair of fancy masks to give away as a prize for one of the raffles. The masks she ordered, unfortunately, were lost during shipping, and now she hopes you can find something suitable to use in a pinch. Do you know where any masks might be found?

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Hint: An ex-pirate hiding out in a small cave might have a few laying around. It has a drop rate of 1/1000, so will take some time to get, but keep trying!