Ring of Frost

Ring of Frost is a level 40 Frost mage talent. The mage conjures a large circle that will instantly freeze any enemy or attackable mobs that enter the circle.

Trivia

 * Ring of Frost is one of Jaina's Heroic Abilities in Heroes of the Storm.
 * Jaina uses a massive version of this ability to temporarily dispel or at least neutralize the Blight at Lordaeron Keep.