Oversoul
The Tentacled One
Shadowborn Apostles! Rakdos colors probably aren't the best for this, but Lady Orca is a demon commander and needed a proper demon deck. This is one. Kind of.
Commander:
1 Lady Orca
1 Archfiend of Depravity
1 Badlands
1 Blood Crypt
1 Bloodstained Mire
1 Culling the Weak
1 Dark Ritual
1 Demonic Tutor
1 Diabolic Intent
1 Echoing Return
1 Harvester of Souls
1 Haunting Voyage
1 Imperial Seal
1 Liliana's Contract
1 Living Death
1 Mana Crypt
1 Marsh Flats
2 Mountain
1 Necropotence
1 Patriarch's Bidding
1 Phyrexian Altar
1 Polluted Delta
1 Prismatic Vista
1 Rakdos, the Showstopper
1 Ravenous Demon
1 Razaketh, the Foulblooded
1 Reaper from the Abyss
1 Rune-Scarred Demon
1 Secret Salvage
36 Shadowborn Apostle
1 Sire of Insanity
1 Sol Ring
1 Songs of the Damned
1 Strip Mine
20 Swamp
1 Taborax, Hope's Demise
1 Tendrils of Agony
1 Thrumming Stone
1 Urborg, Tomb of Yawgmoth
1 Vampiric Tutor
1 Varragoth, Bloodsky Sire
1 Verdant Catacombs
1 Wasteland
1 Wheel of Fortune
1 Yawgmoth's Will
Commander:
1 Lady Orca
1 Archfiend of Depravity
1 Badlands
1 Blood Crypt
1 Bloodstained Mire
1 Culling the Weak
1 Dark Ritual
1 Demonic Tutor
1 Diabolic Intent
1 Echoing Return
1 Harvester of Souls
1 Haunting Voyage
1 Imperial Seal
1 Liliana's Contract
1 Living Death
1 Mana Crypt
1 Marsh Flats
2 Mountain
1 Necropotence
1 Patriarch's Bidding
1 Phyrexian Altar
1 Polluted Delta
1 Prismatic Vista
1 Rakdos, the Showstopper
1 Ravenous Demon
1 Razaketh, the Foulblooded
1 Reaper from the Abyss
1 Rune-Scarred Demon
1 Secret Salvage
36 Shadowborn Apostle
1 Sire of Insanity
1 Sol Ring
1 Songs of the Damned
1 Strip Mine
20 Swamp
1 Taborax, Hope's Demise
1 Tendrils of Agony
1 Thrumming Stone
1 Urborg, Tomb of Yawgmoth
1 Vampiric Tutor
1 Varragoth, Bloodsky Sire
1 Verdant Catacombs
1 Wasteland
1 Wheel of Fortune
1 Yawgmoth's Will