Mono-black creature midrange built around Ob Nixilis of the Black Oath, which drains opponents, makes 5/5 flying Demons, and builds toward an emblem that turns sacrificed creatures into life and cards. The deck fills the board with big Demons and token makers, then feeds creatures to sacrifice outlets that convert power into cards, tokens or drain. A heavy Swamp count fuels black-mana engines and scaling effects like devotion drain, Swamp-counting removal and an equipment that grows with Swamps. How it wins: It overwhelms opponents with large flying Demons and value creatures while draining life through devotion, extort and sacrifice triggers, finishing with huge mana sinks or a burst of life loss. Key roles: - Demon air force: Large evasive fliers, including the 5/5 Demons from Ob Nixilis of the Black Oath and other token makers, provide the main beatdown and often add removal or punishment on top (Grave Titan, Reaper from the Abyss, Demon of Wailing Agonies) - Sacrifice conversion: Outlets turn creatures, especially high-power ones and tokens, into cards, life, zombies, opponent sacrifices or direct life loss, mirroring the commander's emblem (Disciple of Bolas, Ghoulcaller Gisa, Butcher of Malakir) - Morbid payoffs: Once a creature has died that turn, cheap spells and creatures become stronger removal, extra copies or new Demons, rewarding the sacrifice plan (Skirsdag High Priest, Tragic Slip, Malicious Affliction) - Swamp mana and scaling: Swamp-count effects generate enormous black mana and scale damage, removal and equipment with the land count, feeding mana sinks such as pump abilities (Crypt Ghast, Magus of the Coffers, Lashwrithe) - Drain package: Devotion, extort and repeatable damage chip away at every opponent while padding life to pay for draw spells and Demon costs (Gray Merchant of Asphodel, Pontiff of Blight, Pestilence Demon) - Reanimation and board resets: Sweepers clear the table, and recursion brings the best creatures back, often after they were sacrificed for value (Necromantic Selection, Victimize, Dread Return)

Sworn To Darkness decklist

• Skirsdag High Priest
• Nantuko Shade
• Vampire Hexmage
• Burnished Hart
• Flesh Carver
• Crypt Ghast
• Disciple of Bolas
• Evernight Shade
• Abyssal Persecutor
• Nekrataal
• Magus of the Coffers
• Raving Dead
• Shriekmaw
• Bloodgift Demon
• Demon of Wailing Agonies
• Drana, Kalastria Bloodchief
• Ghoulcaller Gisa
• Gray Merchant of Asphodel
• Morkrut Banshee
• Grave Titan
• Phyrexian Gargantua
• Pontiff of Blight
• Reaper from the Abyss
• Butcher of Malakir
• Overseer of the Damned
• Pestilence Demon
• Liliana's Reaver
• Xathrid Demon
• Sign in Blood
• Read the Bones
• Victimize
• Syphon Mind
• Dread Return
• Mutilate
• Infernal Offering
• Aether Snap
• Promise of Power
• Necromantic Selection
• Profane Command
• Dregs of Sorrow
• Black Sun's Zenith
• Spoils of Blood
• Tragic Slip
• Malicious Affliction
• Sudden Spoiling
• Tendrils of Corruption
• Annihilate
• Skeletal Scrying
• Wake the Dead
• Sol Ring
• Charcoal Diamond
• Jet Medallion
• Mind Stone
• Swiftfoot Boots
• Unstable Obelisk
• Worn Powerstone
• Lashwrithe
• Commander's Sphere
• Bad Moon
• Arcane Lighthouse
• Barren Moor
• Bojuka Bog
• Crypt of Agadeem
• Everglades
• Ghost Quarter
• Myriad Landscape
• Polluted Mire
• 8× Swamp
• 8× Swamp
• 8× Swamp
• 8× Swamp