I'm once again fiddling with my mono black vampire deck, and need opinions and suggestions. Current contents are as follows:

Lands
18 Swamp
4 Leechridden Swamp
1 Crypt of Agadeem
1 Cavern of Souls
Total Lands: 24

Creatures
2 Vampire Nocturnus
2 Vampire Nighthawk
3 Gatekeeper of Malakir
1 Bloodhusk Ritualist
2 Captivating Vampire
3 Kalastria Highborn
2 Repentant Vampire
1 Mirri the Cursed
1 Ascendant Evincar
1 Butcher of Malakir
1 Sangromancer
1 Anowon, the Ruin Sage
1 Kalitas, Bloodchief of Ghet
1 Vampire Hexmage
1 Drana, Kalastria Bloodchief
Total Creatures: 23

Sorceries
1 Sorin's Vengeance
3 Blood Tribute
2 Demonic Tutor
1 Bond of Agony
2 Corrupt
3 Feast of Blood
Total Sorceries: 12

Instants
1 Needlebite Trap
Total Instants: 1

Enchantments
2 Sanguine Bond
2 Exquisite Blood
Total Enchantments: 4

Artifacts
1 Coat of Arms
1 Elixir of Immortality
Total Artifacts:2

Total Cards: 66

So, opinions/suggestions?