Dear Devteam!
The warlock spell Howl of Terror is scarcely used in this current very anti-hardcast meta.
A comparable spell would be Psychic Scream. While limited to only 3 targets currently, it is instant cast and has lower cooldown than Howl does.
I think the obvious fix would be to remove the cast time, keep the CD and limit the number of targets feared to be 4.
But that would be boring and would just be a slightly different Psychic Scream.
Here’s an idea: Make it instant, keep the CD as is, but make it a cone ability, and also have the enemies be rooted in fear instead of running away like they currently do. This last part would be to balance it out, if a warrior hamstringed/rogue crippling poisoned the lock before said lock feared them this way, they wouldn’t lose too much distance.
PS.: The warrior ability Intimidating Shout also needs some love, you should definitely reduce the CD on that to 1 min or even 50s.