MTG Salvation

Thanks for taking a look at my take on Chainer, Dementia Master. I built this out of my singleton "cube" of EDH cards. That means I may have slotted an obvious choice into another deck already. If you see a strong case for something that is missing, please let me know. I may avoid playing Vampiric Tutor, Demonic Tutor and Mana Crypt for example, but I'd like to hear your thought regardless.

My Perspective on Chainer
Filling the Graveyards and extending the game all play to this deck's strengths. Towards that end I have packed it with disruption, removal, ramp, card draw and recursion that targets any graveyard.

Of course this all comes at a cost. One difficulty of extending the game is the real risk of killing myself due to life loss (Chainer, Necropotence, Phyrexian Arena, Pestilence Demon, etc.. I've included a significant lifegain sub-theme to help offset those losses. I am hesitant to use sorcery lifegain spells (Exsanguinate for example) because this deck has a hard time fighting on the stack. I have opted for enchantments, artifacts and creatures. Any thoughts?

Doomsday!
Finally, I've been wanting to play Doomsday as a win condition for a very long time. Chainer already plays well with Triskelion and Mikaeus, the Unhallowed, so combining that two card combo with Victimize and Twilight Bargain seemed like a reasonable move. There are a number of other Doomsday stacks for mono-black but they tend to include cards that are sub-optimal on their own.

One reasonable alternative would be Twilight Bargain, Ashnod's Altar, Reassembling Skeleton, Order of the Ebon-Hand and Blood Artist, but I don't see much value in Order of the Ebon-Hand. If I find myself needing more incremental lifegain and another sac outlet then I might go for the other option.

Cards I'm Not Sure About

• Pilgrim's Eye
  
• Pestilence Demon
  
• Worn Powerstone
  

This lists by card function. Cards are listed multiple times if they fulfill more than one function.