Assault the target's mind with Shadow energy, causing X Shadow damage over 3 sec and slowing their movement speed by 50%.
Mind Flay is a channeled spell that can be acquired from the Shadow talent tree. It is the spell with the best damage/mana ratio for the priest, and it has the additional bonus to slow runners by 50%
Patch 3.3.0 (2009-12-08): The range of this ability has been increased to 30 yards, up from 20.
Patch 3.0.8 (2009-01-20): Fixed a bug with targeting where you would not deal damage if not facing the target while channeling. Also corrected an issue where the damage from this ability was slightly delayed.
Patch 3.0.2 (2008-10-14): Can now periodically critically hit. The spell coefficient has been increased approximately 30%.
Patch 1.6.0 (2005-07-12): Will now cause damage to targets immune to movement slowing effects.
Patch 1.4.0 (2005-05-05): Should now be affected by the Focused Casting talent.