The card I'm most excited to try out is Deathreap Ritual, the new enchantment from Conspiracy. This deck does a decent job at ensuring that creatures die, so I anticipate that morbid triggers will occur rather frequently.
I've found the deck to be extremely mana hungry, but when it gets going, as the video showed, it does a very good job at making sure no one else gets to have their things!
Here's my current list.
Commander
Shattergang Brothers
Creatures
Deathrite Shaman
Viscera Seer
Baleful Eidolon
Blood Artist
Bloodghast
Sakura-Tribe Elder
Viridian Emissary
Eternal Witness
Glissa, the Traitor
Goblin Sharpshooter
Junk Diver
Ophiomancer
Wood Elves
Falkenrath Noble
Olivia Voldaren
Solemn Simulacrum
Endrek Sahr, Master Breeder
Shadowborn Demon
Zealous Conscripts
Inferno Titan
Massacre Wurm
Prossh, Skyraider of Kher
Butcher of Malakir
Myr Battlesphere
Greater Gargadon
Enchantments
Phyrexian Reclamation
Rancor
Goblin Bombardment
Deathreap Ritual
Grave Pact
Dictate of Erebos
Vicious Shadows
Sorceries and Instants
Tempt with Vengeance
Farseek
Nature's Lore
Terminate
Putrefy
Dread Return
Boundless Realms
Blasphemous Act
Artifacts
Blade of the Bloodchief
Expedition Map
Skullclamp
Sol Ring
Fellwar Stone
Golgari Signet
Gruul Signet
Rakdos Signet
Strionic Resonator
Swiftfoot Boots
Coalition Relic
Darksteel Ingot
Hammer of Purphoros
Mimic Vat
Oblivion Stone
Whip of Erebos
Spine of Ish Sah
Planeswalkers
Vraska the Unseen
Land
5 Forest
4 Mountain
7 Swamp
Bayou
Blood Crypt
Command Tower
Dragonskull Summit
Homeward Path
Jund Panorama
Khalni Garden
Kher Keep
Marsh Flats
Overgrown Tomb
Raging Ravine
Rootbound Crag
Savage Lands
Stomping Ground
Taiga
Tainted Wood
Temple of Abandon
Temple of Malice
Temple of the False God
Woodland Cemetery
Verdant Catacombs
Vivid Marsh