Im playing with:
Incubus (because 5 glory per battle is something i wouldnt like missing on)
The thrall from karakoth that doubles the number od purple gems and gives you souls (forgot its name)
Sac priest
Portal.
Similar to yours, fire off thrall which will likely fill your priest and portal. Kill your incubus (youll still get extra glory dont worry). Rinse and repeat. Also summoning new troops im first spot seems better since you can let enemy hit you with skulls and deny them mana like that.