Mortuary
Gray Merchant of Asphodel
Bolas's Citadel
Yahenni, Undying Partisan

   Prerequisites

What do I need to start this combo?
Gray Merchant of Asphodel in hand or in your library (Gray Merchant of Asphodel on top of your library in your library).
All other permanents on the battlefield.
Your life total is at least 6 if Gray Merchant is on the top of your library, or you have 3 available otherwise.

   Steps

How does this combo work?
1
Cast Gray Merchant either from your hand by paying 3 or from the top of your library by paying 5 life.
2
When Gray Merchant enters, it triggers, causing each opponent to lose life equal to your devotion to black and causing you to gain life equal to the life lost this way.
3
Activate Yahenni by sacrificing Gray Merchant.
4
When Gray Merchant dies, Mortuary triggers, putting Gray Merchant from your graveyard onto the top of your library.
5
Resolve the Yahenni ability.
6
Repeat.

   Results

What do I get from this combo?
Infinite LTB
Infinite ETB
Infinite sacrifice triggers
Infinite death triggers
Infinite lifegain triggers
Infinite lifegain
Infinite lifeloss
Sephiroth, Fabled SOLDIER
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New Cards
Bitterbloom Bearer
21%inclusion4 decks19 decks
19%synergy
Moonshadow
18%inclusion2 decks11 decks
17%synergy
Super Shredder
18%inclusion3 decks17 decks
17%synergy
Twilight Diviner
9.1%inclusion1 decks11 decks
7%synergy
Grave Venerations
9.1%inclusion1 decks11 decks
7%synergy
High Synergy Cards
Ashnod's Altar
70%inclusion19 decks27 decks
64%synergy
Carrion Feeder
67%inclusion18 decks27 decks
62%synergy
Viscera Seer
70%inclusion19 decks27 decks
62%synergy
Blood Artist
70%inclusion19 decks27 decks
59%synergy
Jet Medallion
59%inclusion16 decks27 decks
56%synergy
Ayara, First of Locthwain
56%inclusion15 decks27 decks
52%synergy
Pitiless Plunderer
59%inclusion16 decks27 decks
51%synergy
Crypt Ghast
56%inclusion15 decks27 decks
51%synergy
Zulaport Cutthroat
56%inclusion15 decks27 decks
47%synergy
Urborg, Tomb of Yawgmoth
56%inclusion15 decks27 decks
47%synergy
Top Cards
Dark Ritual
67%inclusion18 decks27 decks
42%synergy
Feed the Swarm
56%inclusion15 decks27 decks
40%synergy
Warren Soultrader
50%inclusion13 decks26 decks
45%synergy
Phyrexian Altar
48%inclusion13 decks27 decks
45%synergy
Reassembling Skeleton
48%inclusion13 decks27 decks
45%synergy
Skullclamp
48%inclusion13 decks27 decks
37%synergy
Reanimate
48%inclusion13 decks27 decks
29%synergy
Gravecrawler
44%inclusion12 decks27 decks
41%synergy
Diabolic Intent
44%inclusion12 decks27 decks
37%synergy
Ophiomancer
41%inclusion11 decks27 decks
37%synergy
Game Changers
Necropotence
33%inclusion9 decks27 decks
28%synergy
Vampiric Tutor
30%inclusion8 decks27 decks
15%synergy
Demonic Tutor
30%inclusion8 decks27 decks
10%synergy
Orcish Bowmasters
22%inclusion6 decks27 decks
14%synergy
The One Ring
19%inclusion5 decks27 decks
10%synergy
Mana Vault
11%inclusion3 decks27 decks
5%synergy
Creatures
Accursed Marauder
38%inclusion10 decks26 decks
33%synergy
Umbral Collar Zealot
38%inclusion9 decks24 decks
35%synergy
Pawn of Ulamog
37%inclusion10 decks27 decks
35%synergy
K'rrik, Son of Yawgmoth
37%inclusion10 decks27 decks
35%synergy
Yawgmoth, Thran Physician
37%inclusion10 decks27 decks
34%synergy
Syr Konrad, the Grim
33%inclusion9 decks27 decks
25%synergy
Gwenom, Remorseless
32%inclusion7 decks22 decks
30%synergy
Blood Pet
30%inclusion8 decks27 decks
28%synergy
Mikaeus, the Unhallowed
30%inclusion8 decks27 decks
27%synergy
Fleshbag Marauder
30%inclusion8 decks27 decks
26%synergy
Timeline Culler
29%inclusion7 decks24 decks
28%synergy
Nine-Lives Familiar
27%inclusion7 decks26 decks
26%synergy
Forsaken Miner
26%inclusion7 decks27 decks
25%synergy
Lord Skitter, Sewer King
26%inclusion7 decks27 decks
24%synergy
Woe Strider
26%inclusion7 decks27 decks
24%synergy
Braids, Arisen Nightmare
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19%synergy
Vengeful Bloodwitch
23%inclusion6 decks26 decks
21%synergy
Chainer, Dementia Master
22%inclusion6 decks27 decks
22%synergy
Merciless Executioner
22%inclusion6 decks27 decks
21%synergy
Drivnod, Carnage Dominus
22%inclusion6 decks27 decks
20%synergy
Grim Haruspex
22%inclusion6 decks27 decks
19%synergy
Plaguecrafter
22%inclusion6 decks27 decks
18%synergy
Dauthi Voidwalker
22%inclusion6 decks27 decks
16%synergy
Solemn Simulacrum
22%inclusion6 decks27 decks
10%synergy
Marionette Apprentice
19%inclusion5 decks26 decks
15%synergy
Butcher Ghoul
19%inclusion5 decks27 decks
18%synergy
Sifter of Skulls
19%inclusion5 decks27 decks
18%synergy
Priest of Forgotten Gods
19%inclusion5 decks27 decks
16%synergy
Jadar, Ghoulcaller of Nephalia
19%inclusion5 decks27 decks
16%synergy
Butcher of Malakir
19%inclusion5 decks27 decks
16%synergy
Morbid Opportunist
19%inclusion5 decks27 decks
11%synergy
Zodiark, Umbral God
17%inclusion4 decks24 decks
16%synergy
Fumulus, the Infestation
16%inclusion4 decks25 decks
15%synergy
Boggart Trawler
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11%synergy
Dimir House Guard
15%inclusion4 decks27 decks
14%synergy
Bloodsoaked Champion
15%inclusion4 decks27 decks
14%synergy
Endrek Sahr, Master Breeder
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14%synergy
Nether Traitor
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14%synergy
Disciple of Bolas
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13%synergy
Bloodghast
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12%synergy
Midnight Reaper
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12%synergy
Xu-Ifit, Osteoharmonist
13%inclusion3 decks24 decks
12%synergy
Vincent Valentine
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11%synergy
Maha, Its Feathers Night
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10%synergy
Thrull Parasite
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11%synergy
Soldevi Adnate
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11%synergy
Pontiff of Blight
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11%synergy
Magus of the Coffers
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11%synergy
Gisa, the Hellraiser
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10%synergy
Nirkana Revenant
11%inclusion3 decks27 decks
10%synergy
Instants
Malakir Rebirth
44%inclusion12 decks27 decks
36%synergy
Culling the Weak
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37%synergy
Withering Torment
38%inclusion10 decks26 decks
31%synergy
Fell the Profane
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30%synergy
Flare of Malice
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28%synergy
Infernal Grasp
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22%synergy
Village Rites
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17%synergy
Deadly Dispute
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14%synergy
Deadly Rollick
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12%synergy
Undying Malice
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Sheoldred's Edict
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Cabal Ritual
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Supernatural Stamina
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Soul Shatter
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Not Dead After All
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Imp's Mischief
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Fake Your Own Death
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Snuff Out
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11%synergy
Murder
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Entomb
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Shallow Grave
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Return to Action
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Darkness
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10%synergy
Sudden Spoiling
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9%synergy
Hero's Downfall
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Feign Death
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9%synergy
Tragic Slip
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8%synergy
Sorceries
Toxic Deluge
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19%synergy
Exsanguinate
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26%synergy
Sign in Blood
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25%synergy
Victimize
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21%synergy
Night's Whisper
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17%synergy
Diabolic Tutor
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17%synergy
Damnation
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16%synergy
Yawgmoth's Will
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17%synergy
Agadeem's Awakening
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Read the Bones
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13%synergy
Doomsday
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14%synergy
Bubbling Muck
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13%synergy
Torment of Hailfire
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11%synergy
Living Death
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10%synergy
Will of the Abzan
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11%synergy
Repay in Kind
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11%synergy
Temporal Extortion
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11%synergy
Lively Dirge
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9%synergy
Syphon Mind
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8%synergy
Grim Tutor
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7%synergy
Dread Return
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6%synergy
Utility Artifacts
Bontu's Monument
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35%synergy
Lightning Greaves
33%inclusion9 decks27 decks
9%synergy
Sensei's Divining Top
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25%synergy
Aetherflux Reservoir
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15%synergy
The Darkness Crystal
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13%synergy
Altar of Dementia
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13%synergy
Swiftfoot Boots
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-12%synergy
Prism Ring
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11%synergy
Demon's Horn
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11%synergy
Expedition Map
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8%synergy
Enchantments
Black Market Connections
41%inclusion11 decks27 decks
29%synergy
Grave Pact
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29%synergy
Phyrexian Arena
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18%synergy
The Meathook Massacre
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24%synergy
Bastion of Remembrance
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23%synergy
Black Market
26%inclusion7 decks27 decks
22%synergy
Bitterblossom
22%inclusion6 decks27 decks
18%synergy
Font of Agonies
19%inclusion5 decks27 decks
18%synergy
Chthonian Nightmare
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14%synergy
Nest of Scarabs
15%inclusion4 decks27 decks
14%synergy
Greed
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13%synergy
Funeral Room // Awakening Hall
12%inclusion3 decks26 decks
10%synergy
Tombstone Stairwell
11%inclusion3 decks27 decks
11%synergy
Biotransference
11%inclusion3 decks27 decks
10%synergy
Oversold Cemetery
11%inclusion3 decks27 decks
9%synergy
Dictate of Erebos
11%inclusion3 decks27 decks
8%synergy
Kaya's Ghostform
11%inclusion3 decks27 decks
7%synergy
Exquisite Blood
11%inclusion3 decks27 decks
6%synergy
Animate Dead
11%inclusion3 decks27 decks
2%synergy
Planeswalkers
Liliana, Dreadhorde General
15%inclusion4 decks27 decks
11%synergy
Tevesh Szat, Doom of Fools
11%inclusion3 decks27 decks
10%synergy
Utility Lands
Cabal Coffers
56%inclusion15 decks27 decks
46%synergy
Phyrexian Tower
52%inclusion14 decks27 decks
43%synergy
Bojuka Bog
52%inclusion14 decks27 decks
22%synergy
Nykthos, Shrine to Nyx
30%inclusion8 decks27 decks
24%synergy
Lake of the Dead
26%inclusion7 decks27 decks
25%synergy
High Market
26%inclusion7 decks27 decks
23%synergy
Reliquary Tower
26%inclusion7 decks27 decks
-4%synergy
Cabal Stronghold
22%inclusion6 decks27 decks
19%synergy
Spymaster's Vault
19%inclusion5 decks26 decks
17%synergy
Volrath's Stronghold
19%inclusion5 decks27 decks
17%synergy
Barren Moor
19%inclusion5 decks27 decks
15%synergy
Castle Locthwain
19%inclusion5 decks27 decks
15%synergy
Shizo, Death's Storehouse
19%inclusion5 decks27 decks
14%synergy
War Room
19%inclusion5 decks27 decks
13%synergy
Takenuma, Abandoned Mire
19%inclusion5 decks27 decks
10%synergy
Susur Secundi, Void Altar
17%inclusion4 decks24 decks
14%synergy
Midgar, City of Mako
17%inclusion4 decks24 decks
13%synergy
Deserted Temple
15%inclusion4 decks27 decks
14%synergy
Crypt of Agadeem
15%inclusion4 decks27 decks
13%synergy
Mortuary Mire
15%inclusion4 decks27 decks
11%synergy
Karn's Bastion
15%inclusion4 decks27 decks
10%synergy
Command Beacon
15%inclusion4 decks27 decks
10%synergy
Urza's Saga
15%inclusion4 decks27 decks
8%synergy
Radiant Fountain
11%inclusion3 decks27 decks
10%synergy
Memorial to Folly
11%inclusion3 decks27 decks
10%synergy
Mana Artifacts
Sol Ring
81%inclusion22 decks27 decks
-2%synergy
Arcane Signet
44%inclusion12 decks27 decks
-28%synergy
The Soul Stone
32%inclusion7 decks22 decks
28%synergy
Charcoal Diamond
26%inclusion7 decks27 decks
22%synergy
Mind Stone
22%inclusion6 decks27 decks
8%synergy
Thought Vessel
15%inclusion4 decks27 decks
-3%synergy
Mox Amber
11%inclusion3 decks27 decks
7%synergy
Commander's Sphere
11%inclusion3 decks27 decks
-1%synergy
Lands
Myriad Landscape
26%inclusion7 decks27 decks
10%synergy
Urza's Cave
23%inclusion6 decks26 decks
20%synergy
Demolition Field
15%inclusion4 decks27 decks
12%synergy
Gemstone Caverns
11%inclusion3 decks27 decks
6%synergy
Marsh Flats
11%inclusion3 decks27 decks
1%synergy
Verdant Catacombs
11%inclusion3 decks27 decks
0%synergy
Bloodstained Mire
11%inclusion3 decks27 decks
0%synergy
Polluted Delta
11%inclusion3 decks27 decks
-1%synergy
Command Tower
11%inclusion3 decks27 decks
-63%synergy