Deck help

[parrotsqwauk]

Trying a mono-black deck cards i can remember in deck :

4 hypnotic spectres
4 hymn to tourach
2 drain life
1 visara, the dreadful
1 silent specter
2 prowling pangroin or whatever
4 dark ritual
1 sol ring
3 guiltfeeder
3 duress
4 smother
1 diabolic edict
1 grinning demon
2 megrim
2 howling mine
1 demonic consultation
2 diabolic tutor

1 cabal coffers
21 swamp

please reply with your suggestions, was supposed to be a discard deck but i have switched it around a lot, just dont and any grinning demons because i wont get anymore!

 

[Spiderman]

If you're going with discard, maybe The Rack?

 

[train]

Is thumbscrews the other card that does rack types of damage? If so it would be nice also.