The Ice Crown is a magical artifact created by the ice elemental Urgence Evergreen. Its purpose was to grant its wearer their deepest wish. However, the Ice Crown became corrupted, turning anyone who wears it into a corrupted version of Urgence – in other words, the next incarnation of the Ice King.
The wearer is granted control over ice magic, as well as biological immortality. However, their mind is influenced, making them addicted to wearing the Crown. The wearer also loses their memory.