This item is created with Inscription (430); discovered through .
- Patch 5.2.0 (5-Mar-2013): Glyph of Deep Freeze now removes it from global cooldown but also reduces its duration by 1 second.
- Patch 5.0.4 (28 August 2012): No longer prime glyph; changed from . Old Deep Freeze glyph was Your Deep Freeze deals 20% additional damage.
- Patch 4.0.3a (2010-11-23): Glyph of Deep Freeze now increases damage done by Deep Freeze by 20% (no longer increases Frostbolt damage against Deep Frozen targets).
- Patch 3.1.0 (14-Apr-2009): Added.