2020

• Glyph of Deep Freeze
• Item Level 25Disenchants into:
  Not disenchantable
• Major Glyph
• Classes: Mage
• Requires Level 25
• Use: Permanently teaches you this glyph.
  Your Deep Freeze spell is no longer on the global cooldown.
• Sell Price: 1

Source

This item is created with Inscription (430); discovered through [Book of Glyph Mastery].

Materials required:

3x [Celestial Ink]

1x [Light Parchment]

Patch changes

• Patch 5.0.4 (28 August 2012): No longer prime glyph; changed from [Glyph of Water Elemental]. 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. 
  

External links

• Battle.net (EU)
• Wowhead
• Thottbot
• WoWDB