As a curse, this can be removed by mages, druids and shamans.
This ability causes the target to speak Demonic in emotes and chat. This affects players and some NPCs, including elites such as Drek'Thar and Vanndar Stormpike in Alterac Valley. A CM on Blizzard's official forums joked on how coders spent time coding this curse to do just that.[citation needed]
Tips and tactics[]
This curse only affects casting speed, and will have no effect on non-casting targets.
As a form of negative haste, this curse also reduces the tick rate of any damage over time or heal over time effects cast by the target while afflicted. This can be useful for reducing the damage output of Affliction warlocks and Shadow priests who rely on DoTs for much of their damage.
In the RPG[]
This section contains information from the Warcraft RPG which is considered non-canon.
Curse of tongues allows the caster to steal the target's voice with a curse, replacing it with the voice of a terrible demon. The subject's new voice only speaks in the Eredar tongue, regardless of any other spells or effects on the target. This spell prevents the target from using any spell with verbal components.[2]
Patch changes[]
Hotfix (2022-12-05):Now reduces cast time by 10% in PvP combat (was 15%).