I had posted this deck for someone at Boardgamegeek and figured I ought to put it up here as well. Some of the 2x copy cards may be due to me still only having two Core sets, something I plan to fix next time I do an order. But, I do like having some variety in characters so I probably won't change that much.
Hastur
2xAspiring Artist (quick-start card)
2xObsessive Sycophant (help re-ready other characters)
3xDangerous Inmate (fight or drive enemies insane)
2xDemon Lover (reduce skill, more susceptible to other effects)
3xBringer of Fire (destroy nearly any problem card)
2xHarbinger of Insanity (take control of stuff)
2xBlind Submission (take control of stuff)
2xByakhee Attack (reduce enemy hand)
3xPolar Mirage (take control of stuff)
2xAgoraphobia (Return to hand, helps with Willpower)
2xInfernal Obsession (take control of stuff)
Yog
2xBlood Magician (versatile guy)
2xDisciple of the Gate (good combat, Cultist)
2xFaceless Abductor (kidnap stuff)
2xSon of Yeb (another fighter/Cultist)
3xBloodthirsty Zealot (fighter/Cultist)
3xHermetic Scholar (solid character, set up discard)
2xTcho-Tcho Tribe (very tough solo defender)
2xJourney to the Other Side (fish for good cards)
3xCasting off the Skin (nasty story surprise)
1xForbidden Shrine (kind of optional here, but help w/ skill)
3xLethargic Miasma (great card against guys that can't go Insane)
Neutral
2xTattoo Parlor (because I have a lot of Cultists)
I wouldn't say it's a tournament caliber deck, but it's worked pretty well for me locally and can be tweaked from here.
As you can see I'm putting a strong emphasis on taking control of characters and some bouncing characters back to the hand. Lots of Cultists which can get Arcane, fuel the Harbinger, or just put up some fight in the Combat struggle. There's some insanity going on too, and when I run up against things that can't go insane I just kidnap, control, or Miasma to deal with them. This is the situation I found mono-Yog to sometimes have trouble with - too many enemy characters with Terror or Willpower, but this deck can deal with them reasonably well. Also note that insane or back-to-hand characters lose their attachments so it gives me some way to deal with that as well.
With the latest pack now we have Stygian Eye which seems like it belongs in here somewhere - I'll have to see what to take out to make room.