2020

• Glyph of Shadowflame
• Item Level 25Disenchants into:
  Not disenchantable
• Major Glyph
• Classes: Warlock (Demonology)
• Requires Level 25
• Use: Permanently teaches you this glyph.
  Your Shadowflame slow is increased to 10% but Hand of Gul'dan no longer has charges.
• Sell Price: 1

Source

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

Materials required:

3x [Ink of the Sea]

1x [Light Parchment]

Patch changes

• Patch 5.0.4 (28 August 2012): Changed from Your Shadowflame also applies a 70% movement speed slow on its victims. 
  
• Patch 3.1.0 (14-Apr-2009): Added. 
  

External links

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