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
10%inclusion226 decks2.37K decks
Sephiroth, Fabled SOLDIER
0.1%inclusion14 decks17K decks
Braids, Arisen Nightmare
0.1%inclusion4 decks7.89K decks
Yawgmoth, Thran Physician
0.0%inclusion3 decks6.28K decks
Shadow the Hedgehog
0.0%inclusion2 decks7.50K decks
Ayara, First of Locthwain
0.0%inclusion2 decks6.07K decks
Syr Konrad, the Grim
0.0%inclusion1 decks5.46K decks
Kalitas, Bloodchief of Ghet
1.2%inclusion1 decks82 decks
Sengir, the Dark Baron // Tevesh Szat, Doom of Fools
0.3%inclusion1 decks319 decks
Nalia de'Arnise
0.0%inclusion1 decks2.94K decks
Lurrus of the Dream-Den
0.0%inclusion1 decks2.68K decks
Imskir Iron-Eater
0.0%inclusion1 decks4.68K decks
Acererak the Archlich
0.1%inclusion1 decks1.85K decks
Braids, Cabal Minion
0.1%inclusion1 decks1.33K decks
Maralen of the Mornsong
0.0%inclusion1 decks2.11K decks
New Cards
Bitterbloom Bearer
2.8%inclusion6 decks216 decks
2%synergy
Koh, the Face Stealer
1.9%inclusion2 decks106 decks
1%synergy
Realm of Koh
1.9%inclusion2 decks106 decks
1%synergy
Obsessive Pursuit
0.9%inclusion1 decks111 decks
0%synergy
Joo Dee, One of Many
0.9%inclusion1 decks111 decks
0%synergy
High Synergy Cards
Sensei's Divining Top
89%inclusion231 decks260 decks
84%synergy
Aetherflux Reservoir
85%inclusion221 decks260 decks
82%synergy
Viscera Seer
85%inclusion221 decks260 decks
77%synergy
Blood Pet
74%inclusion193 decks260 decks
73%synergy
Dark Ritual
97%inclusion252 decks260 decks
73%synergy
Scheming Symmetry
73%inclusion191 decks260 decks
72%synergy
Death Cultist
71%inclusion185 decks260 decks
71%synergy
Culling the Weak
75%inclusion194 decks260 decks
70%synergy
Tendrils of Agony
70%inclusion183 decks260 decks
70%synergy
Jet Medallion
73%inclusion190 decks260 decks
70%synergy
Top Cards
Lightning Greaves
87%inclusion226 decks260 decks
62%synergy
Cabal Ritual
73%inclusion190 decks260 decks
68%synergy
Lavaspur Boots
71%inclusion184 decks260 decks
69%synergy
Reanimate
67%inclusion175 decks260 decks
49%synergy
Feed the Swarm
60%inclusion155 decks260 decks
43%synergy
Beseech the Mirror
58%inclusion150 decks260 decks
54%synergy
Crashing Drawbridge
57%inclusion149 decks260 decks
56%synergy
Doom Whisperer
57%inclusion149 decks260 decks
55%synergy
Swiftfoot Boots
57%inclusion149 decks260 decks
30%synergy
Deadly Rollick
54%inclusion141 decks260 decks
41%synergy
Game Changers
Vampiric Tutor
63%inclusion165 decks260 decks
48%synergy
Necropotence
62%inclusion160 decks260 decks
56%synergy
Demonic Tutor
58%inclusion151 decks260 decks
38%synergy
Ancient Tomb
51%inclusion133 decks260 decks
42%synergy
Orcish Bowmasters
49%inclusion127 decks260 decks
40%synergy
Opposition Agent
45%inclusion117 decks260 decks
39%synergy
Mana Vault
44%inclusion114 decks260 decks
38%synergy
Imperial Seal
43%inclusion113 decks260 decks
38%synergy
Chrome Mox
43%inclusion113 decks260 decks
37%synergy
The One Ring
40%inclusion104 decks260 decks
31%synergy
Creatures
Dualcaster Mage
100%inclusion3 decks3 decks
96%synergy
Pinnacle Monk
100%inclusion3 decks3 decks
95%synergy
Sheoldred, the Apocalypse
54%inclusion140 decks260 decks
49%synergy
Boggart Trawler
53%inclusion137 decks260 decks
49%synergy
Blood Artist
50%inclusion130 decks260 decks
38%synergy
Dauthi Voidwalker
50%inclusion129 decks260 decks
43%synergy
Crypt Ghast
48%inclusion126 decks260 decks
43%synergy
K'rrik, Son of Yawgmoth
40%inclusion103 decks260 decks
37%synergy
Ornithopter
32%inclusion84 decks260 decks
30%synergy
Bloodthirsty Conqueror
32%inclusion82 decks260 decks
28%synergy
Enduring Tenacity
31%inclusion81 decks260 decks
28%synergy
Vito, Thorn of the Dusk Rose
30%inclusion78 decks260 decks
25%synergy
Zulaport Cutthroat
30%inclusion78 decks260 decks
21%synergy
Shard of the Nightbringer
29%inclusion75 decks260 decks
28%synergy
Ayara, First of Locthwain
27%inclusion69 decks260 decks
23%synergy
Memnite
26%inclusion68 decks260 decks
25%synergy
Vilis, Broker of Blood
25%inclusion66 decks260 decks
22%synergy
Warren Soultrader
25%inclusion65 decks260 decks
19%synergy
Phyrexian Walker
23%inclusion60 decks260 decks
22%synergy
Hoarding Broodlord
21%inclusion54 decks260 decks
19%synergy
Sephiroth, Fabled SOLDIER
20%inclusion52 decks260 decks
18%synergy
Diamond Mare
18%inclusion46 decks260 decks
18%synergy
Gravecrawler
17%inclusion45 decks260 decks
14%synergy
Ancient Cellarspawn
17%inclusion44 decks260 decks
15%synergy
Creeping Bloodsucker
16%inclusion41 decks260 decks
13%synergy
Carrion Feeder
16%inclusion41 decks260 decks
11%synergy
Diamond Lion
15%inclusion38 decks260 decks
15%synergy
Shield Sphere
15%inclusion38 decks260 decks
14%synergy
Pitiless Plunderer
13%inclusion35 decks260 decks
5%synergy
Marauding Blight-Priest
13%inclusion34 decks260 decks
10%synergy
Braids, Arisen Nightmare
12%inclusion32 decks260 decks
5%synergy
Cauldron Familiar
12%inclusion31 decks260 decks
11%synergy
Greedy Freebooter
12%inclusion31 decks260 decks
11%synergy
Woe Strider
12%inclusion31 decks260 decks
10%synergy
Bloodletter of Aclazotz
12%inclusion31 decks260 decks
8%synergy
Overeager Apprentice
10%inclusion27 decks260 decks
10%synergy
Basal Thrull
10%inclusion27 decks260 decks
10%synergy
Serrated Scorpion
10%inclusion27 decks260 decks
10%synergy
Noxious Gearhulk
10%inclusion27 decks260 decks
7%synergy
Dread Presence
10%inclusion26 decks260 decks
9%synergy
Soldevi Adnate
9.2%inclusion24 decks260 decks
9%synergy
Forsaken Miner
9.2%inclusion24 decks260 decks
8%synergy
Solemn Simulacrum
9.2%inclusion24 decks260 decks
-4%synergy
Shambling Ghast
8.8%inclusion23 decks260 decks
8%synergy
Wandering Archaic
8.5%inclusion22 decks260 decks
7%synergy
Ophiomancer
8.1%inclusion21 decks260 decks
5%synergy
Accursed Marauder
8.1%inclusion21 decks260 decks
3%synergy
Faerie Dreamthief
7.7%inclusion20 decks260 decks
7%synergy
Kokusho, the Evening Star
7.7%inclusion20 decks260 decks
6%synergy
Twilight Prophet
7.7%inclusion20 decks260 decks
5%synergy
Instants
Fell the Profane
63%inclusion163 decks260 decks
54%synergy
Withering Torment
43%inclusion112 decks260 decks
35%synergy
Insidious Dreams
42%inclusion110 decks260 decks
42%synergy
Imp's Mischief
41%inclusion107 decks260 decks
37%synergy
Malakir Rebirth
41%inclusion106 decks260 decks
33%synergy
Saw in Half
35%inclusion90 decks260 decks
31%synergy
Rain of Filth
28%inclusion72 decks260 decks
27%synergy
Dismember
27%inclusion69 decks260 decks
23%synergy
Sacrifice
25%inclusion66 decks260 decks
24%synergy
Entomb
22%inclusion56 decks260 decks
15%synergy
Consuming Corruption
21%inclusion55 decks260 decks
20%synergy
Tainted Pact
19%inclusion50 decks260 decks
15%synergy
Snuff Out
18%inclusion48 decks260 decks
15%synergy
Infernal Grasp
18%inclusion47 decks260 decks
11%synergy
Cut Down
16%inclusion42 decks260 decks
15%synergy
Defile
15%inclusion40 decks260 decks
12%synergy
Slaughter Pact
11%inclusion28 decks260 decks
10%synergy
Hagra Mauling
11%inclusion28 decks260 decks
9%synergy
Not Dead After All
10%inclusion27 decks260 decks
7%synergy
Fatal Push
8.5%inclusion22 decks260 decks
7%synergy
Archenemy's Charm
8.5%inclusion22 decks260 decks
7%synergy
Deadly Dispute
8.5%inclusion22 decks260 decks
-4%synergy
Village Rites
8.1%inclusion21 decks260 decks
-1%synergy
Feign Death
7.7%inclusion20 decks260 decks
6%synergy
Go for the Throat
7.3%inclusion19 decks260 decks
1%synergy
Sudden Spoiling
6.5%inclusion17 decks260 decks
5%synergy
Sheoldred's Edict
6.5%inclusion17 decks260 decks
4%synergy
Crypt Incursion
6.2%inclusion16 decks260 decks
5%synergy
Flare of Malice
6.2%inclusion16 decks260 decks
4%synergy
Soul Shatter
5.4%inclusion14 decks260 decks
3%synergy
Sorceries
Electroduplicate
100%inclusion3 decks3 decks
98%synergy
Toxic Deluge
51%inclusion132 decks260 decks
32%synergy
Doomsday
45%inclusion117 decks260 decks
44%synergy
Diabolic Intent
42%inclusion110 decks260 decks
34%synergy
Chain of Smog
37%inclusion96 decks260 decks
36%synergy
Praetor's Grasp
35%inclusion92 decks260 decks
33%synergy
Grim Tutor
35%inclusion90 decks260 decks
30%synergy
Agadeem's Awakening
32%inclusion84 decks260 decks
29%synergy
Insatiable Avarice
32%inclusion83 decks260 decks
29%synergy
Cruel Tutor
31%inclusion81 decks260 decks
31%synergy
Exsanguinate
27%inclusion71 decks260 decks
21%synergy
Peer into the Abyss
24%inclusion62 decks260 decks
21%synergy
Yawgmoth's Will
23%inclusion59 decks260 decks
21%synergy
Night's Whisper
22%inclusion58 decks260 decks
13%synergy
Profane Tutor
22%inclusion56 decks260 decks
19%synergy
Bubbling Muck
21%inclusion55 decks260 decks
20%synergy
Sign in Blood
19%inclusion49 decks260 decks
10%synergy
Dark Petition
17%inclusion45 decks260 decks
17%synergy
Damnation
15%inclusion40 decks260 decks
9%synergy
Diabolic Tutor
12%inclusion31 decks260 decks
6%synergy
Victimize
9.2%inclusion24 decks260 decks
-3%synergy
Pelakka Predation
7.7%inclusion20 decks260 decks
7%synergy
Torment of Hailfire
7.7%inclusion20 decks260 decks
3%synergy
Zof Consumption
6.9%inclusion18 decks260 decks
7%synergy
Unmarked Grave
5.8%inclusion15 decks260 decks
4%synergy
Blasphemous Edict
5.4%inclusion14 decks260 decks
-1%synergy
Read the Bones
5.4%inclusion14 decks260 decks
-1%synergy
Utility Artifacts
Defense Grid
52%inclusion136 decks260 decks
51%synergy
Wishclaw Talisman
52%inclusion136 decks260 decks
47%synergy
Bontu's Monument
42%inclusion110 decks260 decks
40%synergy
Scroll Rack
32%inclusion83 decks260 decks
31%synergy
Conqueror's Flail
30%inclusion78 decks260 decks
29%synergy
Codex Shredder
27%inclusion71 decks260 decks
27%synergy
Manifold Key
24%inclusion63 decks260 decks
23%synergy
Demon's Horn
23%inclusion61 decks260 decks
23%synergy
The Darkness Crystal
23%inclusion60 decks260 decks
20%synergy
Ghoulcaller's Bell
21%inclusion54 decks260 decks
21%synergy
Phyrexian Altar
19%inclusion49 decks260 decks
15%synergy
Ashnod's Altar
18%inclusion48 decks260 decks
12%synergy
Conjurer's Bauble
15%inclusion38 decks260 decks
14%synergy
Pyxis of Pandemonium
14%inclusion36 decks260 decks
14%synergy
Prism Ring
13%inclusion35 decks260 decks
13%synergy
Wand of Vertebrae
13%inclusion33 decks260 decks
13%synergy
Voltaic Key
12%inclusion30 decks260 decks
11%synergy
Mishra's Bauble
11%inclusion29 decks260 decks
10%synergy
Golem's Heart
11%inclusion28 decks260 decks
11%synergy
Altar of Dementia
10%inclusion25 decks260 decks
7%synergy
Staff of the Death Magus
8.8%inclusion23 decks260 decks
9%synergy
The Endstone
8.8%inclusion23 decks260 decks
8%synergy
Commander's Plate
8.1%inclusion21 decks260 decks
6%synergy
Skullclamp
8.1%inclusion21 decks260 decks
-3%synergy
Grinding Station
7.7%inclusion20 decks260 decks
7%synergy
Brainstone
7.3%inclusion19 decks260 decks
7%synergy
Moonsilver Key
6.5%inclusion17 decks260 decks
5%synergy
Enchantments
Heartless Summoning
38%inclusion98 decks260 decks
37%synergy
Animate Dead
35%inclusion90 decks260 decks
26%synergy
Exquisite Blood
34%inclusion88 decks260 decks
29%synergy
Sanguine Bond
29%inclusion75 decks260 decks
23%synergy
Black Market Connections
27%inclusion70 decks260 decks
15%synergy
Phyrexian Arena
25%inclusion64 decks260 decks
9%synergy
The Meathook Massacre
13%inclusion35 decks260 decks
8%synergy
Font of Agonies
12%inclusion30 decks260 decks
11%synergy
Bloodchief Ascension
9.2%inclusion24 decks260 decks
5%synergy
Necromancy
7.7%inclusion20 decks260 decks
4%synergy
Kaya's Ghostform
7.7%inclusion20 decks260 decks
4%synergy
Grave Pact
7.7%inclusion20 decks260 decks
3%synergy
Bastion of Remembrance
6.5%inclusion17 decks260 decks
0%synergy
Bitterblossom
6.2%inclusion16 decks260 decks
2%synergy
Dance of the Dead
5.8%inclusion15 decks260 decks
4%synergy
Planeswalkers
Professor Onyx
52%inclusion134 decks260 decks
50%synergy
Tezzeret, Cruel Captain
38%inclusion98 decks260 decks
36%synergy
Liliana Vess
17%inclusion44 decks260 decks
16%synergy
Ugin, Eye of the Storms
8.8%inclusion23 decks260 decks
8%synergy
Utility Lands
Urborg, Tomb of Yawgmoth
61%inclusion159 decks260 decks
52%synergy
Phyrexian Tower
55%inclusion143 decks260 decks
46%synergy
Hall of the Bandit Lord
47%inclusion123 decks260 decks
47%synergy
Cabal Coffers
46%inclusion119 decks260 decks
36%synergy
Urza's Saga
45%inclusion118 decks260 decks
38%synergy
Crystal Vein
38%inclusion98 decks260 decks
37%synergy
Nykthos, Shrine to Nyx
35%inclusion92 decks260 decks
30%synergy
Bojuka Bog
28%inclusion73 decks260 decks
-2%synergy
City of Traitors
27%inclusion71 decks260 decks
26%synergy
Vault of Whispers
25%inclusion64 decks260 decks
20%synergy
Takenuma, Abandoned Mire
24%inclusion63 decks260 decks
15%synergy
Rogue's Passage
24%inclusion63 decks260 decks
4%synergy
Shizo, Death's Storehouse
24%inclusion62 decks260 decks
19%synergy
Peat Bog
22%inclusion58 decks260 decks
22%synergy
Cabal Stronghold
20%inclusion53 decks260 decks
17%synergy
Lake of the Dead
20%inclusion52 decks260 decks
19%synergy
Emergence Zone
19%inclusion50 decks260 decks
17%synergy
Swarmyard
16%inclusion41 decks260 decks
14%synergy
Command Beacon
16%inclusion41 decks260 decks
11%synergy
Ebon Stronghold
14%inclusion37 decks260 decks
14%synergy
Witch's Cottage
13%inclusion33 decks260 decks
9%synergy
Reliquary Tower
12%inclusion32 decks260 decks
-18%synergy
War Room
12%inclusion31 decks260 decks
6%synergy
Inventors' Fair
10%inclusion27 decks260 decks
7%synergy
Castle Locthwain
10%inclusion27 decks260 decks
6%synergy
Spymaster's Vault
10%inclusion25 decks260 decks
7%synergy
The Black Gate
8.5%inclusion22 decks260 decks
6%synergy
Midgar, City of Mako
7.7%inclusion20 decks260 decks
4%synergy
High Market
6.5%inclusion17 decks260 decks
4%synergy
Mortuary Mire
6.2%inclusion16 decks260 decks
2%synergy
Amonkhet Raceway
5.8%inclusion15 decks260 decks
5%synergy
Mana Artifacts
Sol Ring
97%inclusion251 decks260 decks
13%synergy
Arcane Signet
89%inclusion231 decks260 decks
17%synergy
Lotus Petal
62%inclusion160 decks260 decks
54%synergy
Fellwar Stone
53%inclusion137 decks260 decks
32%synergy
The Soul Stone
51%inclusion132 decks259 decks
47%synergy
Mind Stone
37%inclusion96 decks260 decks
22%synergy
Mox Opal
37%inclusion95 decks260 decks
32%synergy
Grim Monolith
28%inclusion74 decks260 decks
26%synergy
Mox Diamond
27%inclusion71 decks260 decks
23%synergy
Mox Amber
26%inclusion68 decks260 decks
22%synergy
Lion's Eye Diamond
25%inclusion66 decks260 decks
24%synergy
Jeweled Amulet
20%inclusion51 decks260 decks
19%synergy
Thought Vessel
19%inclusion50 decks260 decks
2%synergy
Chromatic Star
16%inclusion42 decks260 decks
16%synergy
Chromatic Sphere
15%inclusion39 decks260 decks
15%synergy
Everflowing Chalice
15%inclusion39 decks260 decks
11%synergy
Springleaf Drum
11%inclusion28 decks260 decks
9%synergy
Charcoal Diamond
7.3%inclusion19 decks260 decks
3%synergy
Lotus Bloom
6.2%inclusion16 decks260 decks
6%synergy
Lands
Gemstone Caverns
40%inclusion105 decks260 decks
35%synergy
Bloodstained Mire
38%inclusion98 decks260 decks
27%synergy
Polluted Delta
37%inclusion97 decks260 decks
25%synergy
Marsh Flats
37%inclusion96 decks260 decks
26%synergy
Verdant Catacombs
36%inclusion93 decks260 decks
25%synergy
Cavern of Souls
30%inclusion78 decks260 decks
23%synergy
Prismatic Vista
29%inclusion76 decks260 decks
24%synergy
Talon Gates of Madara
13%inclusion33 decks260 decks
10%synergy
Command Tower
8.5%inclusion22 decks260 decks
-66%synergy
Daily Bugle Building
8.2%inclusion21 decks256 decks
7%synergy
Plaza of Heroes
7.3%inclusion19 decks260 decks
5%synergy
Demolition Field
6.9%inclusion18 decks260 decks
4%synergy