Wikia

Ring of Frost
Ring of Frost 30 yd range 45 sec cooldown 2.0% of base mana 2 sec cast Summons a Ring of Frost at the target location. Enemies entering the ring will become frozen for 10 sec. Lasts 10 sec. 10 yd radius.
Usable by
Class	Mage
Properties
School	Frost
Cooldown	45 sec (GCD 1.5 sec)
Talents
Talented	Yes
Level required	45
Related debuff
Magic Ring of Frost Frozen. Duration: 10 seconds
TCG image

“

Be still, even for just a moment.

- Nomak the Blazingclaw TCG

”

Ring of Frost is a mage talent available at level 45.

Modified by

Patch 5.2.0 (5-Mar-2013): Ring of Frost cast instantly through Presence of Mind now has a 2-second arming period before the Freeze effect is activated against targets in the area of effect. The 2-second arming period can be reduced by Haste.
Patch 5.1.0 (27-Nov-2012): Ring of Frost now has a 45 second cooldown, up from 30 seconds, and can no longer affect more than 10 targets.
Patch 5.0.4 (28 August 2012): Updated.
Patch 4.2.0 (28-Jun-2011): Deep Freeze and Ring of Frost will cause diminishing returns on each other, in addition to the spells they normally share diminishing returns with.
Patch 4.0.6 (8-Feb-2011): Radius shrunk to 8 yards, and inner "safe" radius is now 4.7 yards (exactly matching graphic). Dispelling the effect of Ring of Frost will now make the target immune to being refrozen for 3 seconds. If a second Ring of Frost is cast by the same mage while the first is still active (via Cold Snap), the first will now disappear and cease functioning. In addition, Ring of Frost now has a PvP duration of 8 seconds.; Ring of Frost can now be cast and works properly on transports (this includes elevators, trapdoors, etc.).