Freezing Band

Freezing Band is an epic ring for casters.

Source
This item is a world drop.

Background
There are only three of these rings known to exist. Each consists of a truesilver core surrounded by a torus of azure ice coated in a slick sheen, as though in the process of melting. The ring is cold to the touch. Though the ice remains slippery, it never melts and the ring is never in danger of slipping off the finger unexpectedly.