Spell Lock is a warlock Felhunter ability. When used while the target is in the process of casting a spell, the target will be unable to cast a spell from the same school of magic for 6 seconds. This is an instant-cast ability with a 24-second cooldown, and is learned automatically by the Felhunter at level 50.
Tips and tactics
Spell Lock can be set to Auto-cast. However, as the AI will normally use this skill to immediately interrupt its target, it might be more beneficial to disable this. Disabling auto-cast will allow the warlock to decide if a spell is worth interrupting, or if the target is enough of a threat to use an interrupt on.
Use of this skill will usually force an NPC caster to enter melee combat, where they are at a considerable disadvantage.
This is an excellent tool against any caster class, and is particularly useful for finishing-off healers, especially when combined with other abilities such as and to provide a lengthy period of silence.
Patches and hotfixes
- Patch 6.0.2 (2014-10-14): Now only interrupts spell casting and no longer Silences the enemy.
- Hotfix (2011-04-29): "Some interrupts were still incorrectly missing targets. Wind Shear, Spell Lock, Counterspell, Mind Freeze, and hunter pet abilities Nether Shock and Serenity Dust should no longer miss."
- Patch 2.1.0 (2007-05-22): Duration reduced to 5 seconds (rank 1) and 6 seconds (rank 2), and cooldown reduced to 24 seconds.
- Patch 1.7.0 (2005-09-13): In addition to interrupting spellcasting, it will now silence the target for a short duration.