I was marveling at how cheaply obscenes can get to a champion upgrade when I remembered that war crier is a thing. If you run Maro and bring a 2x1 of obscenes with war crier the blight that they get from forbidden lore of the shadow council are suddenly a good thing. You can march and throw blight, even into engaged units, without line of sight! Take that carrion lancers! (Range is only 1-3 but hey you get to move first).
When the blight is gone you still have a really good blocker for violent forces Maro. Throw the enemy unit back forcing it to disengage and netting it a panic token right before Maro shoots. You get the big damage Maro can put out and at least a severity 1 morale test.
I think I'm buying a box of obscenes and giving them a blight-green paint job...