Your party finds a cloak that sparkles like a clear night sky, and is smoother than any silk they've ever touched. What properties does it have?
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What you thought was a celestial cloak of night was secretly a cloak of BEEzlebub. Once per long rest you can summon 1d4 swarms of giant hornets that last for 1 hour. Whether or not they listen to you is up to your DM... 
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