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
Gwenom, Remorseless
10%inclusion256 decks2.55K decks
Sephiroth, Fabled SOLDIER
0.1%inclusion17 decks18K decks
Braids, Arisen Nightmare
0.1%inclusion4 decks7.95K decks
Yawgmoth, Thran Physician
0.0%inclusion3 decks6.35K decks
Shadow the Hedgehog
0.0%inclusion2 decks7.86K decks
Ayara, First of Locthwain
0.0%inclusion2 decks6.15K decks
Syr Konrad, the Grim
0.0%inclusion1 decks5.51K decks
Kalitas, Bloodchief of Ghet
1.2%inclusion1 decks84 decks
Sengir, the Dark Baron // Tevesh Szat, Doom of Fools
0.3%inclusion1 decks322 decks
Gollum, Patient Plotter
0.7%inclusion1 decks140 decks
Nalia de'Arnise
0.0%inclusion1 decks2.94K decks
Lurrus of the Dream-Den
0.0%inclusion1 decks2.69K decks
Imskir Iron-Eater
0.0%inclusion1 decks4.77K decks
Acererak the Archlich
0.1%inclusion1 decks1.90K decks
Braids, Cabal Minion
0.1%inclusion1 decks1.36K decks
Maralen of the Mornsong
0.0%inclusion1 decks2.17K decks
New Cards
Koh, the Face Stealer
2.1%inclusion3 decks145 decks
1%synergy
Bitterbloom Bearer
2.0%inclusion5 decks251 decks
1%synergy
Realm of Koh
1.4%inclusion2 decks145 decks
0%synergy
Joo Dee, One of Many
1.4%inclusion2 decks148 decks
1%synergy
Planetarium of Wan Shi Tong
1.2%inclusion2 decks166 decks
0%synergy
High Synergy Cards
Sensei's Divining Top
89%inclusion261 decks294 decks
84%synergy
Aetherflux Reservoir
84%inclusion247 decks294 decks
81%synergy
Viscera Seer
85%inclusion250 decks294 decks
77%synergy
Blood Pet
74%inclusion219 decks294 decks
73%synergy
Dark Ritual
96%inclusion283 decks294 decks
72%synergy
Culling the Weak
76%inclusion223 decks294 decks
72%synergy
Scheming Symmetry
72%inclusion213 decks294 decks
71%synergy
Death Cultist
70%inclusion206 decks294 decks
70%synergy
Tendrils of Agony
70%inclusion207 decks294 decks
70%synergy
Lavaspur Boots
71%inclusion209 decks294 decks
70%synergy
Top Cards
Lightning Greaves
86%inclusion253 decks294 decks
61%synergy
Cabal Ritual
74%inclusion219 decks294 decks
69%synergy
Jet Medallion
72%inclusion213 decks294 decks
69%synergy
Reanimate
68%inclusion199 decks294 decks
49%synergy
Feed the Swarm
59%inclusion174 decks294 decks
43%synergy
Crashing Drawbridge
58%inclusion171 decks294 decks
57%synergy
Doom Whisperer
57%inclusion168 decks294 decks
55%synergy
Beseech the Mirror
57%inclusion168 decks294 decks
54%synergy
Swiftfoot Boots
57%inclusion167 decks294 decks
30%synergy
Deadly Rollick
55%inclusion163 decks294 decks
42%synergy
Game Changers
Vampiric Tutor
64%inclusion188 decks294 decks
49%synergy
Necropotence
61%inclusion179 decks294 decks
56%synergy
Demonic Tutor
58%inclusion171 decks294 decks
39%synergy
Ancient Tomb
52%inclusion152 decks294 decks
42%synergy
Orcish Bowmasters
50%inclusion147 decks294 decks
41%synergy
Mana Vault
46%inclusion134 decks294 decks
40%synergy
Imperial Seal
45%inclusion132 decks294 decks
40%synergy
Opposition Agent
45%inclusion132 decks294 decks
39%synergy
Chrome Mox
44%inclusion129 decks294 decks
38%synergy
The One Ring
40%inclusion117 decks294 decks
31%synergy
Creatures
Dualcaster Mage
100%inclusion3 decks3 decks
96%synergy
Pinnacle Monk
100%inclusion3 decks3 decks
95%synergy
Boggart Trawler
53%inclusion157 decks294 decks
50%synergy
Sheoldred, the Apocalypse
53%inclusion156 decks294 decks
48%synergy
Blood Artist
51%inclusion151 decks294 decks
40%synergy
Dauthi Voidwalker
49%inclusion144 decks294 decks
42%synergy
Crypt Ghast
49%inclusion143 decks294 decks
44%synergy
K'rrik, Son of Yawgmoth
41%inclusion120 decks294 decks
38%synergy
Bloodthirsty Conqueror
34%inclusion100 decks294 decks
30%synergy
Ornithopter
33%inclusion98 decks294 decks
31%synergy
Enduring Tenacity
33%inclusion97 decks294 decks
30%synergy
Vito, Thorn of the Dusk Rose
32%inclusion93 decks294 decks
26%synergy
Shard of the Nightbringer
31%inclusion90 decks294 decks
30%synergy
Zulaport Cutthroat
30%inclusion89 decks294 decks
22%synergy
Ayara, First of Locthwain
28%inclusion81 decks294 decks
24%synergy
Memnite
26%inclusion77 decks294 decks
25%synergy
Vilis, Broker of Blood
26%inclusion76 decks294 decks
23%synergy
Warren Soultrader
25%inclusion74 decks294 decks
20%synergy
Phyrexian Walker
24%inclusion70 decks294 decks
23%synergy
Hoarding Broodlord
21%inclusion63 decks294 decks
19%synergy
Diamond Mare
19%inclusion55 decks294 decks
19%synergy
Sephiroth, Fabled SOLDIER
18%inclusion54 decks294 decks
16%synergy
Gravecrawler
18%inclusion53 decks294 decks
14%synergy
Ancient Cellarspawn
17%inclusion49 decks294 decks
15%synergy
Creeping Bloodsucker
16%inclusion48 decks294 decks
14%synergy
Diamond Lion
15%inclusion45 decks294 decks
15%synergy
Marauding Blight-Priest
15%inclusion44 decks294 decks
12%synergy
Carrion Feeder
15%inclusion43 decks294 decks
10%synergy
Shield Sphere
14%inclusion42 decks294 decks
14%synergy
Braids, Arisen Nightmare
13%inclusion39 decks294 decks
6%synergy
Pitiless Plunderer
13%inclusion39 decks294 decks
5%synergy
Cauldron Familiar
12%inclusion34 decks294 decks
10%synergy
Woe Strider
12%inclusion34 decks294 decks
10%synergy
Bloodletter of Aclazotz
12%inclusion34 decks294 decks
8%synergy
Overeager Apprentice
11%inclusion32 decks294 decks
11%synergy
Noxious Gearhulk
11%inclusion32 decks294 decks
8%synergy
Dread Presence
10%inclusion30 decks294 decks
9%synergy
Serrated Scorpion
10%inclusion29 decks294 decks
10%synergy
Forsaken Miner
10%inclusion29 decks294 decks
9%synergy
Greedy Freebooter
10%inclusion29 decks294 decks
8%synergy
Basal Thrull
9.2%inclusion27 decks294 decks
9%synergy
Solemn Simulacrum
9.2%inclusion27 decks294 decks
-4%synergy
Soldevi Adnate
8.5%inclusion25 decks294 decks
8%synergy
Reassembling Skeleton
8.5%inclusion25 decks294 decks
5%synergy
Massacre Wurm
8.5%inclusion25 decks294 decks
3%synergy
Accursed Marauder
8.5%inclusion25 decks294 decks
3%synergy
Faerie Dreamthief
8.2%inclusion24 decks294 decks
8%synergy
Wandering Archaic
7.8%inclusion23 decks294 decks
6%synergy
Varragoth, Bloodsky Sire
7.8%inclusion23 decks294 decks
6%synergy
Twilight Prophet
7.8%inclusion23 decks294 decks
5%synergy
Instants
Fell the Profane
64%inclusion188 decks294 decks
55%synergy
Insidious Dreams
43%inclusion127 decks294 decks
43%synergy
Withering Torment
43%inclusion126 decks294 decks
35%synergy
Malakir Rebirth
42%inclusion124 decks294 decks
34%synergy
Imp's Mischief
42%inclusion123 decks294 decks
38%synergy
Saw in Half
34%inclusion100 decks294 decks
30%synergy
Dismember
27%inclusion80 decks294 decks
24%synergy
Rain of Filth
27%inclusion79 decks294 decks
26%synergy
Sacrifice
27%inclusion78 decks294 decks
25%synergy
Entomb
21%inclusion63 decks294 decks
14%synergy
Consuming Corruption
21%inclusion62 decks294 decks
20%synergy
Tainted Pact
20%inclusion58 decks294 decks
16%synergy
Snuff Out
18%inclusion54 decks294 decks
15%synergy
Infernal Grasp
18%inclusion52 decks294 decks
10%synergy
Cut Down
15%inclusion43 decks294 decks
14%synergy
Defile
14%inclusion42 decks294 decks
11%synergy
Hagra Mauling
12%inclusion34 decks294 decks
10%synergy
Slaughter Pact
11%inclusion31 decks294 decks
10%synergy
Not Dead After All
10%inclusion30 decks294 decks
7%synergy
Fatal Push
10%inclusion28 decks294 decks
8%synergy
Deadly Dispute
8.8%inclusion26 decks294 decks
-3%synergy
Archenemy's Charm
8.2%inclusion24 decks294 decks
7%synergy
Village Rites
8.2%inclusion24 decks294 decks
-1%synergy
Feign Death
7.1%inclusion21 decks294 decks
5%synergy
Go for the Throat
7.1%inclusion21 decks294 decks
0%synergy
Flare of Malice
6.8%inclusion20 decks294 decks
4%synergy
Sheoldred's Edict
6.8%inclusion20 decks294 decks
4%synergy
Sudden Spoiling
6.5%inclusion19 decks294 decks
5%synergy
Crypt Incursion
5.8%inclusion17 decks294 decks
5%synergy
Sorceries
Electroduplicate
100%inclusion3 decks3 decks
98%synergy
Toxic Deluge
51%inclusion150 decks294 decks
33%synergy
Doomsday
45%inclusion132 decks294 decks
44%synergy
Diabolic Intent
41%inclusion121 decks294 decks
33%synergy
Chain of Smog
37%inclusion108 decks294 decks
36%synergy
Grim Tutor
35%inclusion102 decks294 decks
31%synergy
Praetor's Grasp
34%inclusion101 decks294 decks
32%synergy
Cruel Tutor
33%inclusion97 decks294 decks
33%synergy
Insatiable Avarice
32%inclusion95 decks294 decks
29%synergy
Agadeem's Awakening
32%inclusion93 decks294 decks
29%synergy
Exsanguinate
28%inclusion83 decks294 decks
21%synergy
Yawgmoth's Will
23%inclusion67 decks294 decks
21%synergy
Peer into the Abyss
22%inclusion66 decks294 decks
20%synergy
Night's Whisper
22%inclusion66 decks294 decks
13%synergy
Bubbling Muck
21%inclusion63 decks294 decks
20%synergy
Profane Tutor
21%inclusion63 decks294 decks
19%synergy
Sign in Blood
18%inclusion54 decks294 decks
9%synergy
Dark Petition
18%inclusion53 decks294 decks
17%synergy
Damnation
14%inclusion41 decks294 decks
7%synergy
Diabolic Tutor
11%inclusion33 decks294 decks
6%synergy
Victimize
8.5%inclusion25 decks294 decks
-4%synergy
Pelakka Predation
7.8%inclusion23 decks294 decks
8%synergy
Torment of Hailfire
7.8%inclusion23 decks294 decks
4%synergy
Zof Consumption
7.1%inclusion21 decks294 decks
7%synergy
Blasphemous Edict
5.4%inclusion16 decks294 decks
-1%synergy
Duress
5.1%inclusion15 decks294 decks
4%synergy
Unmarked Grave
5.1%inclusion15 decks294 decks
3%synergy
Read the Bones
5.1%inclusion15 decks294 decks
-1%synergy
Utility Artifacts
Defense Grid
52%inclusion153 decks294 decks
51%synergy
Wishclaw Talisman
52%inclusion152 decks294 decks
46%synergy
Bontu's Monument
43%inclusion127 decks294 decks
41%synergy
Conqueror's Flail
30%inclusion89 decks294 decks
29%synergy
Scroll Rack
30%inclusion89 decks294 decks
29%synergy
Codex Shredder
27%inclusion79 decks294 decks
26%synergy
Manifold Key
24%inclusion71 decks294 decks
23%synergy
The Darkness Crystal
24%inclusion70 decks294 decks
20%synergy
Demon's Horn
22%inclusion66 decks294 decks
22%synergy
Ghoulcaller's Bell
21%inclusion63 decks294 decks
21%synergy
Phyrexian Altar
18%inclusion54 decks294 decks
15%synergy
Ashnod's Altar
18%inclusion52 decks294 decks
11%synergy
Conjurer's Bauble
15%inclusion44 decks294 decks
15%synergy
Pyxis of Pandemonium
14%inclusion42 decks294 decks
14%synergy
Wand of Vertebrae
14%inclusion40 decks294 decks
14%synergy
Prism Ring
13%inclusion39 decks294 decks
13%synergy
Voltaic Key
13%inclusion37 decks294 decks
12%synergy
Mishra's Bauble
11%inclusion31 decks294 decks
9%synergy
Golem's Heart
10%inclusion30 decks294 decks
10%synergy
Altar of Dementia
10%inclusion28 decks294 decks
7%synergy
Skullclamp
8.8%inclusion26 decks294 decks
-2%synergy
The Endstone
8.5%inclusion25 decks294 decks
8%synergy
Staff of the Death Magus
7.8%inclusion23 decks294 decks
8%synergy
Grinding Station
7.8%inclusion23 decks294 decks
7%synergy
Commander's Plate
7.5%inclusion22 decks294 decks
5%synergy
Brainstone
6.8%inclusion20 decks294 decks
6%synergy
Moonsilver Key
6.1%inclusion18 decks294 decks
5%synergy
Enchantments
Heartless Summoning
36%inclusion106 decks294 decks
35%synergy
Exquisite Blood
36%inclusion106 decks294 decks
31%synergy
Animate Dead
33%inclusion98 decks294 decks
24%synergy
Sanguine Bond
30%inclusion89 decks294 decks
25%synergy
Black Market Connections
27%inclusion79 decks294 decks
15%synergy
Phyrexian Arena
25%inclusion74 decks294 decks
10%synergy
The Meathook Massacre
13%inclusion38 decks294 decks
8%synergy
Font of Agonies
11%inclusion33 decks294 decks
11%synergy
Bloodchief Ascension
9.2%inclusion27 decks294 decks
5%synergy
Necromancy
7.8%inclusion23 decks294 decks
5%synergy
Kaya's Ghostform
7.8%inclusion23 decks294 decks
4%synergy
Grave Pact
7.8%inclusion23 decks294 decks
3%synergy
Bastion of Remembrance
6.8%inclusion20 decks294 decks
0%synergy
Dance of the Dead
6.1%inclusion18 decks294 decks
5%synergy
Bitterblossom
6.1%inclusion18 decks294 decks
2%synergy
Planeswalkers
Professor Onyx
52%inclusion154 decks294 decks
51%synergy
Tezzeret, Cruel Captain
36%inclusion106 decks294 decks
34%synergy
Liliana Vess
16%inclusion48 decks294 decks
16%synergy
Ugin, Eye of the Storms
8.2%inclusion24 decks294 decks
7%synergy
Tevesh Szat, Doom of Fools
5.1%inclusion15 decks294 decks
4%synergy
Utility Lands
Urborg, Tomb of Yawgmoth
63%inclusion184 decks294 decks
54%synergy
Phyrexian Tower
55%inclusion162 decks294 decks
46%synergy
Hall of the Bandit Lord
49%inclusion145 decks294 decks
49%synergy
Urza's Saga
47%inclusion137 decks294 decks
40%synergy
Cabal Coffers
45%inclusion131 decks294 decks
35%synergy
Crystal Vein
38%inclusion112 decks294 decks
37%synergy
Nykthos, Shrine to Nyx
36%inclusion106 decks294 decks
31%synergy
City of Traitors
28%inclusion82 decks294 decks
27%synergy
Bojuka Bog
28%inclusion82 decks294 decks
-2%synergy
Vault of Whispers
26%inclusion75 decks294 decks
21%synergy
Takenuma, Abandoned Mire
26%inclusion75 decks294 decks
17%synergy
Shizo, Death's Storehouse
25%inclusion73 decks294 decks
20%synergy
Rogue's Passage
24%inclusion72 decks294 decks
4%synergy
Peat Bog
23%inclusion68 decks294 decks
23%synergy
Lake of the Dead
20%inclusion58 decks294 decks
19%synergy
Emergence Zone
20%inclusion58 decks294 decks
17%synergy
Cabal Stronghold
19%inclusion57 decks294 decks
16%synergy
Command Beacon
15%inclusion44 decks294 decks
10%synergy
Swarmyard
15%inclusion43 decks294 decks
13%synergy
Ebon Stronghold
14%inclusion41 decks294 decks
14%synergy
Reliquary Tower
13%inclusion37 decks294 decks
-17%synergy
Witch's Cottage
12%inclusion35 decks294 decks
9%synergy
War Room
12%inclusion34 decks294 decks
6%synergy
Inventors' Fair
10%inclusion29 decks294 decks
6%synergy
Castle Locthwain
10%inclusion28 decks294 decks
6%synergy
Spymaster's Vault
8.8%inclusion26 decks294 decks
6%synergy
The Black Gate
8.2%inclusion24 decks294 decks
5%synergy
Midgar, City of Mako
8.2%inclusion24 decks294 decks
4%synergy
High Market
6.8%inclusion20 decks294 decks
4%synergy
Mortuary Mire
6.5%inclusion19 decks294 decks
2%synergy
Amonkhet Raceway
5.4%inclusion16 decks294 decks
5%synergy
Blast Zone
5.4%inclusion16 decks294 decks
4%synergy
Mana Artifacts
Sol Ring
97%inclusion284 decks294 decks
13%synergy
Arcane Signet
89%inclusion261 decks294 decks
17%synergy
Lotus Petal
62%inclusion182 decks294 decks
55%synergy
Fellwar Stone
53%inclusion157 decks294 decks
33%synergy
The Soul Stone
51%inclusion150 decks293 decks
47%synergy
Mind Stone
38%inclusion111 decks294 decks
23%synergy
Mox Opal
37%inclusion110 decks294 decks
33%synergy
Grim Monolith
30%inclusion87 decks294 decks
28%synergy
Mox Diamond
28%inclusion82 decks294 decks
24%synergy
Lion's Eye Diamond
26%inclusion77 decks294 decks
24%synergy
Mox Amber
26%inclusion76 decks294 decks
21%synergy
Jeweled Amulet
20%inclusion59 decks294 decks
20%synergy
Thought Vessel
19%inclusion57 decks294 decks
2%synergy
Chromatic Star
16%inclusion48 decks294 decks
16%synergy
Chromatic Sphere
16%inclusion46 decks294 decks
15%synergy
Everflowing Chalice
14%inclusion41 decks294 decks
10%synergy
Springleaf Drum
11%inclusion31 decks294 decks
8%synergy
Charcoal Diamond
7.1%inclusion21 decks294 decks
3%synergy
Lotus Bloom
6.1%inclusion18 decks294 decks
6%synergy
Lands
Gemstone Caverns
42%inclusion124 decks294 decks
37%synergy
Bloodstained Mire
38%inclusion113 decks294 decks
27%synergy
Polluted Delta
38%inclusion111 decks294 decks
26%synergy
Marsh Flats
37%inclusion109 decks294 decks
26%synergy
Verdant Catacombs
36%inclusion107 decks294 decks
26%synergy
Cavern of Souls
31%inclusion90 decks294 decks
23%synergy
Prismatic Vista
30%inclusion89 decks294 decks
25%synergy
Talon Gates of Madara
13%inclusion38 decks294 decks
11%synergy
Command Tower
8.2%inclusion24 decks294 decks
-66%synergy
Daily Bugle Building
7.9%inclusion23 decks290 decks
7%synergy
Plaza of Heroes
6.8%inclusion20 decks294 decks
4%synergy
Demolition Field
6.5%inclusion19 decks294 decks
3%synergy
Mana Confluence
5.4%inclusion16 decks294 decks
-2%synergy
Fabled Passage
5.1%inclusion15 decks294 decks
-4%synergy