This is my first attempt at deckbuilding, so be kind and cut me some slack for any glaring mistakes. Obviously, I welcome any tips and tweaks, I have no idea if this would actually work.
It's pretty self-explanatory; terror, terror and more terror, use Broken Time to get Hastur in asap. The single Tulzscha in there was pretty much an afterthought after I realized most of my characters were Cultists. It's a way to use a second Broken Time - assuming I don't draw Tulzscha myself.
My card pool is fairly limited - hell, I don't even have all of these cards yet - but I've tried to make do. Feel free to add stuff from whichever pack, though - in fact, I encourage it - it would be nice to know where to go next when purchasing.
Bearer of the Yellow Sign (Core) x3
Bringer of Fire (AH) x3
Byakhee Servant (Core) x3
Hastur (TSC) x3
Mad Artist (Core) x3
Messenger from Beyond (Core) x3
Moonbound Byakhee (TGS) x3
Tulzscha (KD) x1
Victoria Glasser (Core) x3
Victoria's Protege (SftSK) x3
Scalpel (TGS) x3
Stygian Eye (IT) x2
Victoria's Loft (Core) x3
The King In Yellow Folio (LR) x2
Broken Space, Broken Time (CoC) x3
Lost to the Madness (TC) x3
Power Drain (Core) x3
Scotophobia (Core) x3