This loop of golden thorns is inset with dozens of gems representing the five colors of Tiamat.  Once donned, the wearer instantly attunes to the wreath and the golden thorns fix the crown onto the head of the wearer, causing the wreath to be unable to be removed.  While donned, the wreath grants the following benefits:

• You have Darkvision out to a range of 60 feet. If you already have Darkvision, wearing the wreath increases the range of your Darkvision by 60 feet.
• When you hit a beast, dragon, or monstrosity of CR 10 or lower with an attack, or when you grapple it, you can use the wreath to cast Dominate Monster on the creature (save DC 15). On a successful save, the target is immune to the power of the wreath for 24 hours. On a failure, a shimmering, golden image of the wreath appears as a collar around the target's neck or as a crown on its head (your choice) while charmed by the spell. If at any point for the duration the creature is no longer of type beast, dragon, or monstrosity of CR 10 or lower, then the spell immediately ends.  If you use the wreath to charm another creature, the first spell immediately ends.  When the spell ends, the target knows it was charmed by you.