I saw this idea on another forum, and thought it would be pretty solid. Played a few games with it and had moderate success, so I thought I would post here for any tips to critique the deck to make it better.
The idea is to control their hand via discard effects, while taking life away with
Megrim 
and
Liliana's Caress 
. Also, the flip side of it is to make sure they have cards in hand for me to make them discard! That is where
Howling Mine 
and
Font of Mythos 
come into play. Now, with all that card draw, why not hurt them there as well with
Underworld Dreams 
?
Here's what I came up with to start:
Swamp 
x10
Blood Crypt 
x4
Graven Cairns 
x4
Blackcleave Cliffs 
x4
Howling Mine x3
Doom Blade 
x3
Liliana's Caress x3
Font of Mythos x3
Inquisition of Kozilek 
x3
Teferi's Puzzle Box 
x3 (strongly considering dropping these. Thoughts?)
Underworld Dreams x3
Liliana of the Veil 
x3
Megrim x3
Damnation 
x3
Blightning 
x4
Thoughtseize 
x4
Puzzlebox can be really good with Dreams out to hurt them, but I found that once my opponents see my game plan (discard to death) they try to keep their hands empty. Without a Howling Mine of Font of Mythos out, it can be pretty easy for them to do so, making Puzzle Box nearly worthless. It has come in hand when I draw unwanted/unneeded lands, so I can simply hold them for different cards at my next upkeep, but I don't think that warrants a slot in the deck.
I have thought of possibly adding
Raven's Crime 
since once I hit 5-ish lands I don't need a hole lot more than that.
Blightning was just too good for me to pass up, plus it gives me access to things like
Ancient Grudge 
in the sideboard.
Thanks in advance for any advice!
