Ring of Frost

Ring of Frost
	Ring of Frost; Level 45 mage ability; 30 yd range; 2% of base mana; 30 sec cooldown; 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.;
Properties
Class	Mage
School	Frost
Cooldown	30 seconds
Other information
Level learned	45
Related debuff
	Magic ; Ring of Frost ; Frozen. ; Duration: 10 seconds ;

Ring of Frost is a talented mage ability, available at level 45.

Patch changes

Patch 5.0.4 (2012-08-28): Now a talent, has a 2 sec cast time, and causes targets to instantly become frozen. Cooldown reduced from 2 min to 30 sec, and duration reduced from 12 to 10 sec.
Patch 4.2.0 (2011-06-28): [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 4.2.0 (2011-06-28): Ring of Frost now has a 1.5 second cast time.
Patch 4.0.6 (2011-02-08): 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.
Patch 4.0.3a (2010-11-23): Became Available.
Patch 4.0.1 (2010-10-12): Added to Spellbook.

Ring of Frost
Ring of Frost Level 45 mage ability 30 yd range 2% of base mana 30 sec cooldown 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.
Properties
Class	Mage
School	Frost
Cooldown	30 seconds
Other information
Level learned	45
Related debuff
Magic Ring of Frost Frozen. Duration: 10 seconds