Mortuary
Gray Merchant of Asphodel
Umbral Collar Zealot
Bolas's Citadel

   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 Umbral Collar Zealot 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 Umbral Collar Zealot 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
Infinite surveil 1
Gwenom, Remorseless
9.4%inclusion212 decks2.27K decks
Sephiroth, Fabled SOLDIER
0.1%inclusion14 decks16.6K decks
Braids, Arisen Nightmare
0.1%inclusion4 decks7.87K decks
Shadow the Hedgehog
0.0%inclusion2 decks7.32K decks
Yawgmoth, Thran Physician
0.0%inclusion2 decks6.24K decks
Syr Konrad, the Grim
0.0%inclusion1 decks5.44K decks
Kalitas, Bloodchief of Ghet
1.2%inclusion1 decks81 decks
Sengir, the Dark Baron // Tevesh Szat, Doom of Fools
0.3%inclusion1 decks312 decks
Nalia de'Arnise
0.0%inclusion1 decks2.94K decks
Lurrus of the Dream-Den
0.0%inclusion1 decks2.65K decks
Imskir Iron-Eater
0.0%inclusion1 decks4.62K decks
Acererak the Archlich
0.1%inclusion1 decks1.83K decks
Ayara, First of Locthwain
0.0%inclusion1 decks6.01K decks
Braids, Cabal Minion
0.1%inclusion1 decks1.31K decks
Maralen of the Mornsong
0.0%inclusion1 decks2.08K decks
New Cards
Bitterbloom Bearer
3.0%inclusion6 decks200 decks
2%synergy
Koh, the Face Stealer
1.2%inclusion1 decks86 decks
1%synergy
Realm of Koh
1.2%inclusion1 decks86 decks
0%synergy
Obsessive Pursuit
1.1%inclusion1 decks91 decks
0%synergy
Foggy Swamp Visions
0.9%inclusion1 decks108 decks
0%synergy
High Synergy Cards
Sensei's Divining Top
89%inclusion218 decks244 decks
85%synergy
Aetherflux Reservoir
84%inclusion206 decks244 decks
81%synergy
Viscera Seer
86%inclusion209 decks244 decks
77%synergy
Dark Ritual
97%inclusion237 decks244 decks
73%synergy
Blood Pet
73%inclusion177 decks244 decks
71%synergy
Death Cultist
71%inclusion174 decks244 decks
71%synergy
Scheming Symmetry
73%inclusion178 decks244 decks
71%synergy
Culling the Weak
74%inclusion180 decks244 decks
70%synergy
Tendrils of Agony
70%inclusion171 decks244 decks
70%synergy
Jet Medallion
73%inclusion177 decks244 decks
69%synergy
Top Cards
Lightning Greaves
87%inclusion212 decks244 decks
62%synergy
Cabal Ritual
72%inclusion176 decks244 decks
67%synergy
Lavaspur Boots
70%inclusion170 decks244 decks
68%synergy
Reanimate
67%inclusion163 decks244 decks
48%synergy
Beseech the Mirror
58%inclusion141 decks244 decks
55%synergy
Feed the Swarm
57%inclusion140 decks244 decks
41%synergy
Doom Whisperer
57%inclusion139 decks244 decks
55%synergy
Crashing Drawbridge
57%inclusion138 decks244 decks
55%synergy
Swiftfoot Boots
56%inclusion136 decks244 decks
29%synergy
Sheoldred, the Apocalypse
53%inclusion130 decks244 decks
48%synergy
Game Changers
Vampiric Tutor
63%inclusion154 decks244 decks
48%synergy
Necropotence
60%inclusion147 decks244 decks
55%synergy
Demonic Tutor
58%inclusion141 decks244 decks
38%synergy
Ancient Tomb
51%inclusion125 decks244 decks
42%synergy
Orcish Bowmasters
49%inclusion119 decks244 decks
40%synergy
Opposition Agent
45%inclusion109 decks244 decks
39%synergy
Imperial Seal
44%inclusion108 decks244 decks
39%synergy
Chrome Mox
44%inclusion107 decks244 decks
38%synergy
Mana Vault
43%inclusion106 decks244 decks
37%synergy
The One Ring
41%inclusion99 decks244 decks
32%synergy
Creatures
Dualcaster Mage
100%inclusion3 decks3 decks
96%synergy
Pinnacle Monk
100%inclusion3 decks3 decks
95%synergy
Boggart Trawler
52%inclusion127 decks244 decks
48%synergy
Blood Artist
51%inclusion125 decks244 decks
40%synergy
Crypt Ghast
49%inclusion119 decks244 decks
44%synergy
Dauthi Voidwalker
49%inclusion119 decks244 decks
42%synergy
K'rrik, Son of Yawgmoth
39%inclusion95 decks244 decks
37%synergy
Bloodthirsty Conqueror
32%inclusion78 decks244 decks
28%synergy
Zulaport Cutthroat
32%inclusion77 decks244 decks
23%synergy
Ornithopter
30%inclusion74 decks244 decks
28%synergy
Enduring Tenacity
30%inclusion74 decks244 decks
27%synergy
Vito, Thorn of the Dusk Rose
30%inclusion73 decks244 decks
25%synergy
Shard of the Nightbringer
29%inclusion71 decks244 decks
28%synergy
Ayara, First of Locthwain
27%inclusion65 decks244 decks
23%synergy
Warren Soultrader
27%inclusion65 decks244 decks
21%synergy
Vilis, Broker of Blood
26%inclusion64 decks244 decks
23%synergy
Memnite
26%inclusion63 decks244 decks
25%synergy
Phyrexian Walker
22%inclusion54 decks244 decks
22%synergy
Hoarding Broodlord
20%inclusion50 decks244 decks
18%synergy
Sephiroth, Fabled SOLDIER
20%inclusion50 decks244 decks
18%synergy
Gravecrawler
19%inclusion46 decks244 decks
15%synergy
Diamond Mare
17%inclusion42 decks244 decks
17%synergy
Ancient Cellarspawn
16%inclusion40 decks244 decks
15%synergy
Carrion Feeder
16%inclusion38 decks244 decks
11%synergy
Creeping Bloodsucker
15%inclusion37 decks244 decks
13%synergy
Shield Sphere
14%inclusion34 decks244 decks
14%synergy
Diamond Lion
14%inclusion33 decks244 decks
13%synergy
Marauding Blight-Priest
13%inclusion32 decks244 decks
10%synergy
Braids, Arisen Nightmare
13%inclusion32 decks244 decks
6%synergy
Pitiless Plunderer
13%inclusion32 decks244 decks
5%synergy
Woe Strider
13%inclusion31 decks244 decks
11%synergy
Cauldron Familiar
12%inclusion30 decks244 decks
11%synergy
Greedy Freebooter
12%inclusion30 decks244 decks
11%synergy
Bloodletter of Aclazotz
11%inclusion28 decks244 decks
8%synergy
Overeager Apprentice
11%inclusion26 decks244 decks
11%synergy
Serrated Scorpion
11%inclusion26 decks244 decks
10%synergy
Forsaken Miner
10%inclusion25 decks244 decks
9%synergy
Noxious Gearhulk
10%inclusion25 decks244 decks
7%synergy
Basal Thrull
10%inclusion24 decks244 decks
10%synergy
Solemn Simulacrum
9.4%inclusion23 decks244 decks
-4%synergy
Dread Presence
9.0%inclusion22 decks244 decks
8%synergy
Soldevi Adnate
8.6%inclusion21 decks244 decks
8%synergy
Ophiomancer
8.6%inclusion21 decks244 decks
5%synergy
Accursed Marauder
8.6%inclusion21 decks244 decks
3%synergy
Wandering Archaic
8.2%inclusion20 decks244 decks
7%synergy
Kokusho, the Evening Star
8.2%inclusion20 decks244 decks
7%synergy
Massacre Wurm
8.2%inclusion20 decks244 decks
3%synergy
Faerie Dreamthief
7.8%inclusion19 decks244 decks
7%synergy
Shambling Ghast
7.8%inclusion19 decks244 decks
7%synergy
Valgavoth, Terror Eater
7.8%inclusion19 decks244 decks
5%synergy
Instants
Fell the Profane
61%inclusion150 decks244 decks
53%synergy
Deadly Rollick
52%inclusion127 decks244 decks
39%synergy
Insidious Dreams
43%inclusion105 decks244 decks
43%synergy
Withering Torment
43%inclusion104 decks244 decks
35%synergy
Malakir Rebirth
41%inclusion100 decks244 decks
33%synergy
Imp's Mischief
41%inclusion99 decks244 decks
37%synergy
Saw in Half
35%inclusion85 decks244 decks
31%synergy
Rain of Filth
27%inclusion66 decks244 decks
26%synergy
Dismember
27%inclusion66 decks244 decks
24%synergy
Sacrifice
25%inclusion61 decks244 decks
24%synergy
Consuming Corruption
21%inclusion52 decks244 decks
20%synergy
Entomb
21%inclusion51 decks244 decks
14%synergy
Tainted Pact
19%inclusion46 decks244 decks
15%synergy
Infernal Grasp
18%inclusion43 decks244 decks
10%synergy
Defile
16%inclusion40 decks244 decks
13%synergy
Snuff Out
16%inclusion40 decks244 decks
13%synergy
Cut Down
16%inclusion38 decks244 decks
15%synergy
Hagra Mauling
12%inclusion29 decks244 decks
10%synergy
Slaughter Pact
11%inclusion26 decks244 decks
10%synergy
Not Dead After All
10%inclusion25 decks244 decks
7%synergy
Archenemy's Charm
8.6%inclusion21 decks244 decks
7%synergy
Deadly Dispute
8.6%inclusion21 decks244 decks
-3%synergy
Fatal Push
8.2%inclusion20 decks244 decks
7%synergy
Feign Death
8.2%inclusion20 decks244 decks
6%synergy
Village Rites
8.2%inclusion20 decks244 decks
-1%synergy
Go for the Throat
7.0%inclusion17 decks244 decks
0%synergy
Sheoldred's Edict
6.6%inclusion16 decks244 decks
4%synergy
Crypt Incursion
6.1%inclusion15 decks244 decks
5%synergy
Flare of Malice
6.1%inclusion15 decks244 decks
4%synergy
Sudden Spoiling
5.7%inclusion14 decks244 decks
4%synergy
Soul Shatter
5.3%inclusion13 decks244 decks
3%synergy
Sorceries
Electroduplicate
100%inclusion3 decks3 decks
98%synergy
Toxic Deluge
50%inclusion123 decks244 decks
32%synergy
Doomsday
46%inclusion113 decks244 decks
46%synergy
Diabolic Intent
42%inclusion102 decks244 decks
34%synergy
Chain of Smog
36%inclusion87 decks244 decks
35%synergy
Praetor's Grasp
34%inclusion84 decks244 decks
32%synergy
Grim Tutor
34%inclusion83 decks244 decks
30%synergy
Agadeem's Awakening
34%inclusion82 decks244 decks
31%synergy
Insatiable Avarice
32%inclusion78 decks244 decks
29%synergy
Cruel Tutor
31%inclusion75 decks244 decks
30%synergy
Exsanguinate
27%inclusion65 decks244 decks
20%synergy
Peer into the Abyss
23%inclusion55 decks244 decks
20%synergy
Night's Whisper
23%inclusion55 decks244 decks
14%synergy
Yawgmoth's Will
21%inclusion52 decks244 decks
20%synergy
Bubbling Muck
21%inclusion51 decks244 decks
20%synergy
Profane Tutor
20%inclusion50 decks244 decks
18%synergy
Dark Petition
18%inclusion45 decks244 decks
18%synergy
Sign in Blood
18%inclusion44 decks244 decks
9%synergy
Damnation
15%inclusion37 decks244 decks
8%synergy
Diabolic Tutor
12%inclusion30 decks244 decks
7%synergy
Victimize
10%inclusion24 decks244 decks
-2%synergy
Pelakka Predation
7.8%inclusion19 decks244 decks
8%synergy
Zof Consumption
7.0%inclusion17 decks244 decks
7%synergy
Torment of Hailfire
7.0%inclusion17 decks244 decks
3%synergy
Unmarked Grave
6.1%inclusion15 decks244 decks
4%synergy
Blasphemous Edict
5.3%inclusion13 decks244 decks
-1%synergy
Read the Bones
5.3%inclusion13 decks244 decks
-1%synergy
Utility Artifacts
Wishclaw Talisman
52%inclusion127 decks244 decks
47%synergy
Defense Grid
52%inclusion126 decks244 decks
51%synergy
Bontu's Monument
42%inclusion103 decks244 decks
40%synergy
Scroll Rack
32%inclusion77 decks244 decks
30%synergy
Conqueror's Flail
31%inclusion75 decks244 decks
30%synergy
Codex Shredder
27%inclusion66 decks244 decks
26%synergy
Manifold Key
24%inclusion58 decks244 decks
22%synergy
Demon's Horn
23%inclusion57 decks244 decks
23%synergy
The Darkness Crystal
22%inclusion54 decks244 decks
19%synergy
Ghoulcaller's Bell
20%inclusion48 decks244 decks
19%synergy
Phyrexian Altar
19%inclusion47 decks244 decks
16%synergy
Ashnod's Altar
19%inclusion47 decks244 decks
13%synergy
Prism Ring
14%inclusion33 decks244 decks
13%synergy
Conjurer's Bauble
14%inclusion33 decks244 decks
13%synergy
Pyxis of Pandemonium
13%inclusion32 decks244 decks
13%synergy
Wand of Vertebrae
12%inclusion29 decks244 decks
12%synergy
Voltaic Key
11%inclusion28 decks244 decks
11%synergy
Golem's Heart
11%inclusion27 decks244 decks
11%synergy
Mishra's Bauble
11%inclusion27 decks244 decks
10%synergy
Altar of Dementia
10%inclusion24 decks244 decks
8%synergy
The Endstone
9.4%inclusion23 decks244 decks
9%synergy
Staff of the Death Magus
8.6%inclusion21 decks244 decks
8%synergy
Skullclamp
8.2%inclusion20 decks244 decks
-3%synergy
Brainstone
7.8%inclusion19 decks244 decks
7%synergy
Grinding Station
7.4%inclusion18 decks244 decks
7%synergy
Commander's Plate
7.4%inclusion18 decks244 decks
5%synergy
Moonsilver Key
5.7%inclusion14 decks244 decks
5%synergy
Enchantments
Heartless Summoning
37%inclusion91 decks244 decks
36%synergy
Animate Dead
36%inclusion88 decks244 decks
27%synergy
Exquisite Blood
34%inclusion82 decks244 decks
28%synergy
Sanguine Bond
28%inclusion69 decks244 decks
23%synergy
Black Market Connections
26%inclusion63 decks244 decks
14%synergy
Phyrexian Arena
24%inclusion59 decks244 decks
8%synergy
The Meathook Massacre
13%inclusion31 decks244 decks
7%synergy
Font of Agonies
11%inclusion28 decks244 decks
11%synergy
Bloodchief Ascension
9.4%inclusion23 decks244 decks
6%synergy
Necromancy
8.2%inclusion20 decks244 decks
5%synergy
Kaya's Ghostform
8.2%inclusion20 decks244 decks
4%synergy
Grave Pact
8.2%inclusion20 decks244 decks
3%synergy
Bastion of Remembrance
6.6%inclusion16 decks244 decks
0%synergy
Bitterblossom
6.1%inclusion15 decks244 decks
2%synergy
Dance of the Dead
5.7%inclusion14 decks244 decks
4%synergy
Planeswalkers
Professor Onyx
50%inclusion122 decks244 decks
49%synergy
Tezzeret, Cruel Captain
37%inclusion91 decks244 decks
36%synergy
Liliana Vess
17%inclusion42 decks244 decks
16%synergy
Ugin, Eye of the Storms
9.4%inclusion23 decks244 decks
8%synergy
Tevesh Szat, Doom of Fools
5.3%inclusion13 decks244 decks
4%synergy
Utility Lands
Urborg, Tomb of Yawgmoth
60%inclusion146 decks244 decks
51%synergy
Phyrexian Tower
53%inclusion130 decks244 decks
44%synergy
Hall of the Bandit Lord
48%inclusion116 decks244 decks
47%synergy
Cabal Coffers
45%inclusion111 decks244 decks
36%synergy
Urza's Saga
44%inclusion108 decks244 decks
37%synergy
Crystal Vein
37%inclusion90 decks244 decks
36%synergy
Nykthos, Shrine to Nyx
35%inclusion86 decks244 decks
30%synergy
Bojuka Bog
29%inclusion70 decks244 decks
-1%synergy
City of Traitors
27%inclusion66 decks244 decks
26%synergy
Shizo, Death's Storehouse
25%inclusion60 decks244 decks
20%synergy
Rogue's Passage
24%inclusion59 decks244 decks
4%synergy
Vault of Whispers
24%inclusion58 decks244 decks
19%synergy
Takenuma, Abandoned Mire
23%inclusion57 decks244 decks
14%synergy
Peat Bog
23%inclusion56 decks244 decks
23%synergy
Lake of the Dead
20%inclusion50 decks244 decks
20%synergy
Cabal Stronghold
20%inclusion49 decks244 decks
17%synergy
Emergence Zone
18%inclusion45 decks244 decks
16%synergy
Swarmyard
16%inclusion38 decks244 decks
14%synergy
Command Beacon
16%inclusion38 decks244 decks
11%synergy
Ebon Stronghold
15%inclusion36 decks244 decks
15%synergy
Witch's Cottage
14%inclusion33 decks244 decks
10%synergy
War Room
12%inclusion30 decks244 decks
6%synergy
Reliquary Tower
11%inclusion27 decks244 decks
-19%synergy
Inventors' Fair
11%inclusion26 decks244 decks
7%synergy
Castle Locthwain
10%inclusion25 decks244 decks
6%synergy
Spymaster's Vault
10%inclusion24 decks244 decks
7%synergy
The Black Gate
8.6%inclusion21 decks244 decks
6%synergy
Midgar, City of Mako
8.2%inclusion20 decks244 decks
4%synergy
High Market
7.0%inclusion17 decks244 decks
4%synergy
Mortuary Mire
6.6%inclusion16 decks244 decks
2%synergy
Amonkhet Raceway
6.1%inclusion15 decks244 decks
5%synergy
Mana Artifacts
Sol Ring
97%inclusion236 decks244 decks
13%synergy
Arcane Signet
89%inclusion217 decks244 decks
17%synergy
Lotus Petal
62%inclusion151 decks244 decks
55%synergy
Fellwar Stone
53%inclusion129 decks244 decks
32%synergy
The Soul Stone
51%inclusion125 decks243 decks
47%synergy
Mox Opal
36%inclusion88 decks244 decks
32%synergy
Mind Stone
36%inclusion88 decks244 decks
21%synergy
Grim Monolith
28%inclusion69 decks244 decks
26%synergy
Mox Diamond
27%inclusion66 decks244 decks
23%synergy
Mox Amber
25%inclusion62 decks244 decks
21%synergy
Lion's Eye Diamond
25%inclusion61 decks244 decks
23%synergy
Jeweled Amulet
19%inclusion46 decks244 decks
18%synergy
Thought Vessel
18%inclusion43 decks244 decks
0%synergy
Chromatic Star
15%inclusion37 decks244 decks
15%synergy
Chromatic Sphere
14%inclusion35 decks244 decks
14%synergy
Everflowing Chalice
14%inclusion34 decks244 decks
10%synergy
Springleaf Drum
11%inclusion26 decks244 decks
9%synergy
Charcoal Diamond
7.4%inclusion18 decks244 decks
3%synergy
Lotus Bloom
7.0%inclusion17 decks244 decks
7%synergy
Lands
Gemstone Caverns
41%inclusion99 decks244 decks
36%synergy
Marsh Flats
37%inclusion90 decks244 decks
26%synergy
Bloodstained Mire
37%inclusion90 decks244 decks
26%synergy
Polluted Delta
36%inclusion89 decks244 decks
25%synergy
Verdant Catacombs
35%inclusion86 decks244 decks
24%synergy
Prismatic Vista
30%inclusion72 decks244 decks
25%synergy
Cavern of Souls
29%inclusion70 decks244 decks
21%synergy
Talon Gates of Madara
13%inclusion31 decks244 decks
10%synergy
Daily Bugle Building
8.3%inclusion20 decks240 decks
7%synergy
Command Tower
7.8%inclusion19 decks244 decks
-66%synergy
Plaza of Heroes
7.4%inclusion18 decks244 decks
5%synergy
Demolition Field
7.0%inclusion17 decks244 decks
4%synergy