Not sure if you ended up taking it out, but the goal of your deck is to make your opponent lost all cards and have no hand...making The Rack and Shrieking affliction essential to killing them. However, with Liliana's Caress, I believe it lacks synergy. Take those out and run a full set of the others.

Lay Bare the Heart

Definitely grab Geth’s Verdict.

I like Augur of Skulls over Wrench Mind. I find Wrench too weak, and Augur offers impressive versatility, chumping if needed, even swinging vs in certain situations, then sacing to force the discard as needed.

^ Agree , augur of skulls should be better than Wrench.

I like Waste Not too, but Im not sure what to delete in order to introduce it as you have Liliana's Caress, The Rack and Shrieking Affliction to punnish the opponent for the discard cards... But at least put it in the sideboard, I guess. Its a great card and could be usefull sometimes.