As a terrormancer a lot of damage comes from fear.
To most effectively chain fear I run spectral grasp, spectral wall, and corrupt boon.
Essentially, I will lay down spectral wall. (Mark or DS) fear them into it. Pull them back into the wall with Spectral grasp. And corrupt boon when they try to escape it with stability.
How many other people have done this?
(It is easy to practice on skyhammer due to the nature of fear being able to send people to their death).