I might be wrong, but wouldn't it be possible to build a trap that is really hard to escape with a Hollows of Despair marker and an Insidious Madness?
Put the HoD marker in place, move an Insidious Madness right into the middle of it and activate Psychopathic Episode. Now you can use a Lilitu to Lure some targets into contact with the HoD marker which forces them to win a WP -> 13 duel with a , most models should loose this duel and get burried.
In the Resolve Effects Step, return the models but make sure that they still touch the HoD marker, so they have to make another WP -> 13 Duel as soon as they want to move.
Next round, activate the Insidious Madness as soon as possible and use Induce Phobia and Psychopathic Madness, so each action of all models trapped in the HoD marker will force them to win a Terrifying -> 12 duel and, if they try to move, additionally a WP -> 13 duel with , that should be more than most models can handle.
If this works, you can use Lilitu to collect more and more models in your trap and as long as you win the initiative flip, almost no model should be able to escape. Just make sure to not lure in models that can easily kill a Df 6 Insidious madness if you lose the initiative flip.
The Insidious Madness is also rather save, cause attacks and spells would receive a due to the HoD marker.