Magical Devices For Everyone #9

In our new magical world I opened this battle gear store after I had finished my education for "The use of Real Magic as a Human". I am already excited where the road will take you! <3 So you got this new awesome outfit and it really suits you! But what about magical features? Remember the Comfy Soda, Magical Wings or Insta Skin you bought a while ago? Let's attach your's to the outfit so that you can either fly, resist cold and heat or switch your identity! While I am upgrading your gear you browse through the store looking for some useful magical accessoires. There is so much colorful stuff like bracelets, rings, belts and more. You read the item descriptions and instantly know that you need this one! 
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What is it?
- The Starfish Necklace: Be able to breath under water
- The Ring of Understanding: Be able to communicate with animals
- The Storage Brooch: Each gem can magically store one item of your choice