http://tappedout.net/mtg-decks/creature-lockdown-d/
Basically a TON of removal, and 12 creatures to penalize opponents from playing creatures, or having them die, while giving me life. I need a bit more drawing power but cant think of anything. Considered sorin's vengence, as games can tend to go on for a bit with this. Also considered splasing red for reforge the soul and bonfire of the damned. But really killing wave seems to do pretty great late game. I can pay 12 life to keep a blood artist and falkenrath noble (7 cost killing wave) while my opponent looses life regardless of what he does.

It looks fine but I would say that 20 lands is too few and 4 Killing Waves is too many.