Fear

Fear is a Warlock spell in the Affliction tree. Fear causes a single enemy to flee in fear, effectively disabling it temporarily. Glyph of Fear causes the enemy to instead "tremble in place" and be rooted to the spot; this glyph is effectively required for using Fear in PvE situations.

Improvements
Talents: Glyphs:
 * Improved Fear: Causes your Fear spell to inflict a Nightmare on the target when the fear effect ends. The Nightmare effect reduces the target's movement speed by 15/30% for 5 sec.
 * Glyph of Fear: Your Fear causes the target to tremble in place instead of fleeing in fear, but now causes Fear to have a 5 sec cooldown.