Processing what you guys have said what do you think of the following use.
Give the HH to a golem, teleport him with a squad of 4-5 astral mages to a province with a big enemy army. Script the golem to call horror X5, cast spells and the astral mages to horror mark X5. The golem will never route and won't die to an accidental attack by a horror and the astral mages will make sure that the horrors are attracted to the enemy army.
Only question is, what happens when the enemy army routes and a bunch of horrors remain on the battle field???
If there's nothing but horrors on the field, they'll turn on you and everyone dies.
That's why I suggest that each mage has their 5th script as Returning with enough gems on hand to cast it.
Hopefully you should be able to get in and out before the enemy buff scripts are finished and the horrors will rampage across a battlefield you aren't even in.
You can sweeten the deal by throwing down an Arouse Hunger on the same province, give the enemy something to shoot at during the crucial first turn or two.
Are you sure Returning will help? IIRC the mage still takes the damage from the attack and only then returns back home, which would mean that in this case there will be several dead bodies teleporting home :X
I haven't played around with Returning much though, so I might as well be wrong
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I'm in the IDF. (So any new reply by me is a very rare event.)