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%inclusion263 decks2.57K decks
Sephiroth, Fabled SOLDIER
0.1%inclusion18 decks18.1K decks
Braids, Arisen Nightmare
0.1%inclusion4 decks7.90K decks
Yawgmoth, Thran Physician
0.0%inclusion3 decks6.34K decks
Shadow the Hedgehog
0.0%inclusion2 decks7.89K decks
Ayara, First of Locthwain
0.0%inclusion2 decks6.13K decks
Syr Konrad, the Grim
0.0%inclusion1 decks5.46K decks
Kalitas, Bloodchief of Ghet
1.2%inclusion1 decks83 decks
Sengir, the Dark Baron // Tevesh Szat, Doom of Fools
0.3%inclusion1 decks317 decks
Gollum, Patient Plotter
0.7%inclusion1 decks140 decks
Valgavoth, Terror Eater
0.0%inclusion1 decks3.44K 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 decks4.78K decks
Acererak the Archlich
0.1%inclusion1 decks1.89K decks
Braids, Cabal Minion
0.1%inclusion1 decks1.36K decks
Maralen of the Mornsong
0.0%inclusion1 decks2.19K decks
New Cards
Bitterbloom Bearer
2.3%inclusion6 decks260 decks
2%synergy
Koh, the Face Stealer
1.9%inclusion3 decks154 decks
1%synergy
Realm of Koh
1.3%inclusion2 decks154 decks
0%synergy
Joo Dee, One of Many
1.3%inclusion2 decks157 decks
1%synergy
Planetarium of Wan Shi Tong
1.1%inclusion2 decks175 decks
0%synergy
High Synergy Cards
Sensei's Divining Top
88%inclusion268 decks303 decks
84%synergy
Aetherflux Reservoir
84%inclusion254 decks303 decks
81%synergy
Viscera Seer
85%inclusion257 decks303 decks
77%synergy
Blood Pet
74%inclusion224 decks303 decks
73%synergy
Culling the Weak
76%inclusion230 decks303 decks
72%synergy
Dark Ritual
96%inclusion291 decks303 decks
72%synergy
Death Cultist
70%inclusion213 decks303 decks
70%synergy
Scheming Symmetry
72%inclusion218 decks303 decks
70%synergy
Lavaspur Boots
71%inclusion215 decks303 decks
70%synergy
Tendrils of Agony
70%inclusion212 decks303 decks
69%synergy
Top Cards
Lightning Greaves
85%inclusion258 decks303 decks
60%synergy
Cabal Ritual
75%inclusion226 decks303 decks
69%synergy
Jet Medallion
73%inclusion220 decks303 decks
69%synergy
Reanimate
68%inclusion206 decks303 decks
49%synergy
Feed the Swarm
59%inclusion179 decks303 decks
43%synergy
Crashing Drawbridge
58%inclusion175 decks303 decks
56%synergy
Doom Whisperer
57%inclusion174 decks303 decks
56%synergy
Beseech the Mirror
57%inclusion174 decks303 decks
54%synergy
Swiftfoot Boots
57%inclusion172 decks303 decks
29%synergy
Deadly Rollick
56%inclusion171 decks303 decks
43%synergy
Game Changers
Vampiric Tutor
65%inclusion196 decks303 decks
49%synergy
Necropotence
61%inclusion185 decks303 decks
56%synergy
Demonic Tutor
58%inclusion177 decks303 decks
39%synergy
Ancient Tomb
52%inclusion157 decks303 decks
42%synergy
Orcish Bowmasters
50%inclusion153 decks303 decks
42%synergy
Mana Vault
46%inclusion139 decks303 decks
40%synergy
Opposition Agent
46%inclusion138 decks303 decks
40%synergy
Imperial Seal
45%inclusion137 decks303 decks
40%synergy
Chrome Mox
44%inclusion134 decks303 decks
38%synergy
The One Ring
39%inclusion119 decks303 decks
31%synergy
Creatures
Dualcaster Mage
100%inclusion3 decks3 decks
96%synergy
Pinnacle Monk
100%inclusion3 decks3 decks
95%synergy
Sheoldred, the Apocalypse
53%inclusion162 decks303 decks
48%synergy
Boggart Trawler
52%inclusion159 decks303 decks
49%synergy
Blood Artist
52%inclusion157 decks303 decks
40%synergy
Dauthi Voidwalker
50%inclusion150 decks303 decks
43%synergy
Crypt Ghast
49%inclusion147 decks303 decks
43%synergy
K'rrik, Son of Yawgmoth
41%inclusion125 decks303 decks
39%synergy
Bloodthirsty Conqueror
34%inclusion104 decks303 decks
31%synergy
Enduring Tenacity
33%inclusion100 decks303 decks
30%synergy
Ornithopter
33%inclusion99 decks303 decks
31%synergy
Vito, Thorn of the Dusk Rose
32%inclusion96 decks303 decks
26%synergy
Shard of the Nightbringer
30%inclusion92 decks303 decks
30%synergy
Zulaport Cutthroat
30%inclusion91 decks303 decks
21%synergy
Ayara, First of Locthwain
27%inclusion83 decks303 decks
24%synergy
Memnite
26%inclusion78 decks303 decks
25%synergy
Vilis, Broker of Blood
26%inclusion78 decks303 decks
23%synergy
Warren Soultrader
25%inclusion77 decks303 decks
20%synergy
Phyrexian Walker
23%inclusion71 decks303 decks
23%synergy
Hoarding Broodlord
20%inclusion62 decks303 decks
18%synergy
Diamond Mare
19%inclusion58 decks303 decks
19%synergy
Sephiroth, Fabled SOLDIER
18%inclusion56 decks303 decks
16%synergy
Gravecrawler
18%inclusion54 decks303 decks
14%synergy
Ancient Cellarspawn
17%inclusion50 decks303 decks
15%synergy
Creeping Bloodsucker
16%inclusion48 decks303 decks
13%synergy
Diamond Lion
15%inclusion46 decks303 decks
15%synergy
Carrion Feeder
15%inclusion45 decks303 decks
10%synergy
Marauding Blight-Priest
15%inclusion44 decks303 decks
12%synergy
Shield Sphere
14%inclusion42 decks303 decks
13%synergy
Pitiless Plunderer
14%inclusion42 decks303 decks
5%synergy
Braids, Arisen Nightmare
13%inclusion40 decks303 decks
6%synergy
Woe Strider
12%inclusion36 decks303 decks
10%synergy
Cauldron Familiar
12%inclusion35 decks303 decks
10%synergy
Bloodletter of Aclazotz
11%inclusion34 decks303 decks
8%synergy
Overeager Apprentice
11%inclusion32 decks303 decks
10%synergy
Noxious Gearhulk
11%inclusion32 decks303 decks
7%synergy
Dread Presence
10%inclusion31 decks303 decks
9%synergy
Forsaken Miner
10%inclusion30 decks303 decks
9%synergy
Greedy Freebooter
10%inclusion30 decks303 decks
8%synergy
Serrated Scorpion
10%inclusion29 decks303 decks
9%synergy
Solemn Simulacrum
9.2%inclusion28 decks303 decks
-4%synergy
Basal Thrull
8.9%inclusion27 decks303 decks
9%synergy
Massacre Wurm
8.9%inclusion27 decks303 decks
4%synergy
Reassembling Skeleton
8.6%inclusion26 decks303 decks
5%synergy
Accursed Marauder
8.6%inclusion26 decks303 decks
3%synergy
Soldevi Adnate
8.3%inclusion25 decks303 decks
8%synergy
Faerie Dreamthief
7.9%inclusion24 decks303 decks
7%synergy
Ophiomancer
7.9%inclusion24 decks303 decks
5%synergy
Shambling Ghast
7.6%inclusion23 decks303 decks
7%synergy
Wandering Archaic
7.6%inclusion23 decks303 decks
6%synergy
Instants
Fell the Profane
63%inclusion192 decks303 decks
54%synergy
Insidious Dreams
43%inclusion130 decks303 decks
43%synergy
Withering Torment
43%inclusion129 decks303 decks
35%synergy
Malakir Rebirth
43%inclusion129 decks303 decks
34%synergy
Imp's Mischief
42%inclusion128 decks303 decks
38%synergy
Saw in Half
33%inclusion101 decks303 decks
29%synergy
Dismember
27%inclusion82 decks303 decks
24%synergy
Rain of Filth
27%inclusion81 decks303 decks
26%synergy
Sacrifice
26%inclusion78 decks303 decks
25%synergy
Entomb
22%inclusion67 decks303 decks
15%synergy
Consuming Corruption
20%inclusion62 decks303 decks
19%synergy
Tainted Pact
19%inclusion59 decks303 decks
16%synergy
Snuff Out
19%inclusion57 decks303 decks
15%synergy
Infernal Grasp
17%inclusion52 decks303 decks
10%synergy
Cut Down
15%inclusion45 decks303 decks
14%synergy
Defile
14%inclusion43 decks303 decks
11%synergy
Hagra Mauling
11%inclusion34 decks303 decks
10%synergy
Slaughter Pact
11%inclusion32 decks303 decks
10%synergy
Not Dead After All
11%inclusion32 decks303 decks
8%synergy
Fatal Push
9.2%inclusion28 decks303 decks
8%synergy
Deadly Dispute
8.9%inclusion27 decks303 decks
-3%synergy
Archenemy's Charm
8.3%inclusion25 decks303 decks
7%synergy
Village Rites
8.3%inclusion25 decks303 decks
-1%synergy
Feign Death
7.3%inclusion22 decks303 decks
5%synergy
Go for the Throat
7.3%inclusion22 decks303 decks
1%synergy
Flare of Malice
6.9%inclusion21 decks303 decks
4%synergy
Sheoldred's Edict
6.9%inclusion21 decks303 decks
4%synergy
Sudden Spoiling
6.3%inclusion19 decks303 decks
5%synergy
Crypt Incursion
5.6%inclusion17 decks303 decks
5%synergy
Sorceries
Electroduplicate
100%inclusion3 decks3 decks
98%synergy
Toxic Deluge
51%inclusion155 decks303 decks
33%synergy
Doomsday
45%inclusion135 decks303 decks
44%synergy
Diabolic Intent
41%inclusion124 decks303 decks
33%synergy
Chain of Smog
37%inclusion112 decks303 decks
36%synergy
Grim Tutor
35%inclusion105 decks303 decks
31%synergy
Praetor's Grasp
34%inclusion104 decks303 decks
32%synergy
Cruel Tutor
33%inclusion99 decks303 decks
32%synergy
Insatiable Avarice
32%inclusion97 decks303 decks
29%synergy
Agadeem's Awakening
31%inclusion95 decks303 decks
28%synergy
Exsanguinate
29%inclusion88 decks303 decks
22%synergy
Peer into the Abyss
22%inclusion68 decks303 decks
20%synergy
Yawgmoth's Will
22%inclusion67 decks303 decks
21%synergy
Night's Whisper
22%inclusion66 decks303 decks
13%synergy
Bubbling Muck
21%inclusion65 decks303 decks
20%synergy
Profane Tutor
21%inclusion63 decks303 decks
19%synergy
Dark Petition
18%inclusion54 decks303 decks
17%synergy
Sign in Blood
18%inclusion54 decks303 decks
9%synergy
Damnation
14%inclusion43 decks303 decks
7%synergy
Diabolic Tutor
11%inclusion33 decks303 decks
5%synergy
Victimize
8.3%inclusion25 decks303 decks
-4%synergy
Torment of Hailfire
7.9%inclusion24 decks303 decks
4%synergy
Pelakka Predation
7.6%inclusion23 decks303 decks
7%synergy
Zof Consumption
7.3%inclusion22 decks303 decks
7%synergy
Blasphemous Edict
5.6%inclusion17 decks303 decks
0%synergy
Utility Artifacts
Defense Grid
52%inclusion159 decks303 decks
52%synergy
Wishclaw Talisman
52%inclusion158 decks303 decks
47%synergy
Bontu's Monument
44%inclusion132 decks303 decks
42%synergy
Conqueror's Flail
30%inclusion91 decks303 decks
29%synergy
Scroll Rack
30%inclusion90 decks303 decks
29%synergy
Codex Shredder
26%inclusion80 decks303 decks
26%synergy
The Darkness Crystal
24%inclusion74 decks303 decks
21%synergy
Manifold Key
24%inclusion72 decks303 decks
22%synergy
Demon's Horn
22%inclusion67 decks303 decks
22%synergy
Ghoulcaller's Bell
21%inclusion64 decks303 decks
21%synergy
Phyrexian Altar
18%inclusion55 decks303 decks
15%synergy
Ashnod's Altar
17%inclusion53 decks303 decks
11%synergy
Conjurer's Bauble
15%inclusion45 decks303 decks
15%synergy
Pyxis of Pandemonium
14%inclusion43 decks303 decks
14%synergy
Wand of Vertebrae
14%inclusion41 decks303 decks
13%synergy
Prism Ring
13%inclusion40 decks303 decks
13%synergy
Voltaic Key
13%inclusion38 decks303 decks
12%synergy
Mishra's Bauble
10%inclusion31 decks303 decks
9%synergy
Golem's Heart
10%inclusion30 decks303 decks
10%synergy
Altar of Dementia
10%inclusion29 decks303 decks
7%synergy
Skullclamp
8.9%inclusion27 decks303 decks
-2%synergy
The Endstone
8.3%inclusion25 decks303 decks
7%synergy
Staff of the Death Magus
7.9%inclusion24 decks303 decks
8%synergy
Grinding Station
7.6%inclusion23 decks303 decks
7%synergy
Commander's Plate
7.6%inclusion23 decks303 decks
5%synergy
Brainstone
6.9%inclusion21 decks303 decks
7%synergy
Moonsilver Key
6.6%inclusion20 decks303 decks
6%synergy
Enchantments
Exquisite Blood
37%inclusion111 decks303 decks
31%synergy
Heartless Summoning
36%inclusion108 decks303 decks
35%synergy
Animate Dead
32%inclusion98 decks303 decks
23%synergy
Sanguine Bond
30%inclusion92 decks303 decks
25%synergy
Black Market Connections
27%inclusion81 decks303 decks
15%synergy
Phyrexian Arena
25%inclusion76 decks303 decks
9%synergy
The Meathook Massacre
13%inclusion38 decks303 decks
7%synergy
Font of Agonies
12%inclusion35 decks303 decks
11%synergy
Bloodchief Ascension
9.2%inclusion28 decks303 decks
5%synergy
Kaya's Ghostform
8.3%inclusion25 decks303 decks
5%synergy
Necromancy
7.9%inclusion24 decks303 decks
5%synergy
Grave Pact
7.9%inclusion24 decks303 decks
3%synergy
Bastion of Remembrance
6.9%inclusion21 decks303 decks
0%synergy
Dance of the Dead
6.3%inclusion19 decks303 decks
5%synergy
Bitterblossom
6.3%inclusion19 decks303 decks
2%synergy
Planeswalkers
Professor Onyx
52%inclusion159 decks303 decks
51%synergy
Tezzeret, Cruel Captain
36%inclusion109 decks303 decks
34%synergy
Liliana Vess
17%inclusion50 decks303 decks
16%synergy
Ugin, Eye of the Storms
8.3%inclusion25 decks303 decks
7%synergy
Utility Lands
Urborg, Tomb of Yawgmoth
63%inclusion190 decks303 decks
54%synergy
Phyrexian Tower
56%inclusion169 decks303 decks
47%synergy
Hall of the Bandit Lord
50%inclusion150 decks303 decks
49%synergy
Urza's Saga
47%inclusion142 decks303 decks
40%synergy
Cabal Coffers
45%inclusion136 decks303 decks
35%synergy
Crystal Vein
38%inclusion114 decks303 decks
37%synergy
Nykthos, Shrine to Nyx
36%inclusion110 decks303 decks
31%synergy
Bojuka Bog
28%inclusion86 decks303 decks
-1%synergy
City of Traitors
28%inclusion84 decks303 decks
27%synergy
Vault of Whispers
25%inclusion77 decks303 decks
21%synergy
Takenuma, Abandoned Mire
25%inclusion77 decks303 decks
17%synergy
Shizo, Death's Storehouse
25%inclusion76 decks303 decks
21%synergy
Rogue's Passage
25%inclusion75 decks303 decks
4%synergy
Peat Bog
23%inclusion69 decks303 decks
22%synergy
Emergence Zone
20%inclusion61 decks303 decks
18%synergy
Lake of the Dead
19%inclusion58 decks303 decks
19%synergy
Cabal Stronghold
19%inclusion57 decks303 decks
16%synergy
Swarmyard
15%inclusion44 decks303 decks
13%synergy
Command Beacon
15%inclusion44 decks303 decks
10%synergy
Ebon Stronghold
14%inclusion41 decks303 decks
13%synergy
Reliquary Tower
12%inclusion37 decks303 decks
-18%synergy
Witch's Cottage
12%inclusion36 decks303 decks
8%synergy
War Room
11%inclusion34 decks303 decks
5%synergy
Inventors' Fair
10%inclusion29 decks303 decks
6%synergy
Castle Locthwain
9.2%inclusion28 decks303 decks
5%synergy
Midgar, City of Mako
8.9%inclusion27 decks303 decks
5%synergy
The Black Gate
8.6%inclusion26 decks303 decks
6%synergy
Spymaster's Vault
8.6%inclusion26 decks303 decks
6%synergy
High Market
6.9%inclusion21 decks303 decks
4%synergy
Mortuary Mire
6.6%inclusion20 decks303 decks
2%synergy
Blast Zone
5.6%inclusion17 decks303 decks
5%synergy
Amonkhet Raceway
5.3%inclusion16 decks303 decks
4%synergy
Mana Artifacts
Sol Ring
96%inclusion291 decks303 decks
12%synergy
Arcane Signet
88%inclusion266 decks303 decks
15%synergy
Lotus Petal
62%inclusion187 decks303 decks
55%synergy
Fellwar Stone
53%inclusion160 decks303 decks
32%synergy
The Soul Stone
51%inclusion154 decks302 decks
47%synergy
Mox Opal
38%inclusion115 decks303 decks
34%synergy
Mind Stone
38%inclusion114 decks303 decks
23%synergy
Grim Monolith
30%inclusion90 decks303 decks
28%synergy
Mox Diamond
28%inclusion84 decks303 decks
23%synergy
Lion's Eye Diamond
26%inclusion80 decks303 decks
25%synergy
Mox Amber
25%inclusion77 decks303 decks
21%synergy
Jeweled Amulet
20%inclusion60 decks303 decks
19%synergy
Thought Vessel
19%inclusion57 decks303 decks
1%synergy
Chromatic Star
16%inclusion49 decks303 decks
16%synergy
Chromatic Sphere
16%inclusion47 decks303 decks
15%synergy
Everflowing Chalice
14%inclusion43 decks303 decks
10%synergy
Springleaf Drum
11%inclusion32 decks303 decks
8%synergy
Charcoal Diamond
6.9%inclusion21 decks303 decks
3%synergy
Lotus Bloom
5.9%inclusion18 decks303 decks
6%synergy
Lands
Gemstone Caverns
43%inclusion129 decks303 decks
38%synergy
Bloodstained Mire
39%inclusion117 decks303 decks
27%synergy
Polluted Delta
38%inclusion115 decks303 decks
26%synergy
Marsh Flats
37%inclusion112 decks303 decks
26%synergy
Verdant Catacombs
37%inclusion112 decks303 decks
26%synergy
Cavern of Souls
30%inclusion91 decks303 decks
23%synergy
Prismatic Vista
30%inclusion90 decks303 decks
25%synergy
Talon Gates of Madara
13%inclusion38 decks303 decks
10%synergy
Daily Bugle Building
8.0%inclusion24 decks299 decks
7%synergy
Command Tower
7.9%inclusion24 decks303 decks
-66%synergy
Plaza of Heroes
6.6%inclusion20 decks303 decks
4%synergy
Demolition Field
6.6%inclusion20 decks303 decks
4%synergy
Mana Confluence
5.6%inclusion17 decks303 decks
-1%synergy
Fabled Passage
5.3%inclusion16 decks303 decks
-4%synergy