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
11%inclusion342 decks3.04K decks
Sephiroth, Fabled SOLDIER
0.2%inclusion32 decks20.6K decks
Braids, Arisen Nightmare
0.1%inclusion4 decks7.93K decks
Yawgmoth, Thran Physician
0.0%inclusion3 decks6.45K decks
Shadow the Hedgehog
0.0%inclusion2 decks8.73K decks
Syr Konrad, the Grim
0.0%inclusion2 decks5.52K decks
Ayara, First of Locthwain
0.0%inclusion2 decks6.29K decks
Kalitas, Bloodchief of Ghet
1.2%inclusion1 decks82 decks
Sengir, the Dark Baron // Tevesh Szat, Doom of Fools
0.3%inclusion1 decks311 decks
Gollum, Patient Plotter
0.7%inclusion1 decks146 decks
Valgavoth, Terror Eater
0.0%inclusion1 decks3.56K decks
Witch-king of Angmar
0.1%inclusion1 decks863 decks
Mikaeus, the Unhallowed
0.1%inclusion1 decks1.90K decks
Nalia de'Arnise
0.0%inclusion1 decks2.85K decks
Lurrus of the Dream-Den
0.0%inclusion1 decks2.69K decks
The Ghoul, Gunslinger
0.1%inclusion1 decks937 decks
Imskir Iron-Eater
0.0%inclusion1 decks4.98K decks
Acererak the Archlich
0.1%inclusion1 decks1.99K decks
New Cards
Hexing Squelcher
100%inclusion1 decks1 decks
92%synergy
Formidable Speaker
50%inclusion1 decks2 decks
47%synergy
Lluwen, Imperfect Naturalist
50%inclusion1 decks2 decks
49%synergy
Trystan, Callous Cultivator
50%inclusion1 decks2 decks
49%synergy
Skateboard
18%inclusion4 decks22 decks
18%synergy
High Synergy Cards
Sensei's Divining Top
88%inclusion353 decks402 decks
83%synergy
Aetherflux Reservoir
84%inclusion336 decks402 decks
80%synergy
Viscera Seer
86%inclusion345 decks402 decks
78%synergy
Culling the Weak
78%inclusion312 decks402 decks
73%synergy
Blood Pet
74%inclusion299 decks402 decks
73%synergy
Dark Ritual
96%inclusion386 decks402 decks
72%synergy
Jet Medallion
75%inclusion302 decks402 decks
71%synergy
Tendrils of Agony
71%inclusion285 decks402 decks
70%synergy
Cabal Ritual
75%inclusion303 decks402 decks
70%synergy
Scheming Symmetry
71%inclusion285 decks402 decks
69%synergy
Top Cards
Lightning Greaves
83%inclusion332 decks402 decks
58%synergy
Reanimate
70%inclusion281 decks402 decks
51%synergy
Lavaspur Boots
69%inclusion279 decks402 decks
68%synergy
Death Cultist
68%inclusion273 decks402 decks
68%synergy
Crashing Drawbridge
59%inclusion238 decks402 decks
58%synergy
Doom Whisperer
59%inclusion237 decks402 decks
57%synergy
Beseech the Mirror
57%inclusion229 decks402 decks
54%synergy
Deadly Rollick
57%inclusion229 decks402 decks
43%synergy
Feed the Swarm
57%inclusion229 decks402 decks
41%synergy
Swiftfoot Boots
57%inclusion229 decks402 decks
30%synergy
Game Changers
Vampiric Tutor
66%inclusion267 decks402 decks
52%synergy
Necropotence
63%inclusion254 decks402 decks
58%synergy
Demonic Tutor
59%inclusion237 decks402 decks
40%synergy
Ancient Tomb
52%inclusion211 decks402 decks
43%synergy
Orcish Bowmasters
49%inclusion197 decks402 decks
41%synergy
Mana Vault
48%inclusion191 decks402 decks
42%synergy
Chrome Mox
45%inclusion182 decks402 decks
39%synergy
Imperial Seal
45%inclusion181 decks402 decks
40%synergy
Opposition Agent
43%inclusion172 decks402 decks
38%synergy
The One Ring
41%inclusion165 decks402 decks
33%synergy
Creatures
Dualcaster Mage
100%inclusion3 decks3 decks
96%synergy
Pinnacle Monk
100%inclusion3 decks3 decks
95%synergy
Blood Artist
54%inclusion216 decks402 decks
42%synergy
Boggart Trawler
52%inclusion210 decks402 decks
48%synergy
Sheoldred, the Apocalypse
52%inclusion208 decks402 decks
47%synergy
Crypt Ghast
50%inclusion202 decks402 decks
45%synergy
Dauthi Voidwalker
49%inclusion196 decks402 decks
42%synergy
K'rrik, Son of Yawgmoth
42%inclusion168 decks402 decks
39%synergy
Bloodthirsty Conqueror
34%inclusion137 decks402 decks
31%synergy
Ornithopter
33%inclusion134 decks402 decks
31%synergy
Enduring Tenacity
33%inclusion131 decks402 decks
29%synergy
Zulaport Cutthroat
33%inclusion131 decks402 decks
24%synergy
Shard of the Nightbringer
31%inclusion123 decks402 decks
30%synergy
Ayara, First of Locthwain
30%inclusion120 decks402 decks
27%synergy
Vito, Thorn of the Dusk Rose
30%inclusion120 decks402 decks
25%synergy
Memnite
29%inclusion115 decks402 decks
28%synergy
Warren Soultrader
27%inclusion108 decks402 decks
21%synergy
Phyrexian Walker
25%inclusion100 decks402 decks
24%synergy
Vilis, Broker of Blood
23%inclusion91 decks402 decks
20%synergy
Hoarding Broodlord
20%inclusion82 decks402 decks
18%synergy
Gravecrawler
20%inclusion80 decks402 decks
16%synergy
Diamond Lion
17%inclusion70 decks402 decks
17%synergy
Shield Sphere
17%inclusion69 decks402 decks
17%synergy
Diamond Mare
17%inclusion68 decks402 decks
17%synergy
Sephiroth, Fabled SOLDIER
16%inclusion66 decks402 decks
14%synergy
Pitiless Plunderer
15%inclusion62 decks402 decks
7%synergy
Ancient Cellarspawn
15%inclusion61 decks402 decks
14%synergy
Braids, Arisen Nightmare
15%inclusion59 decks402 decks
8%synergy
Marauding Blight-Priest
14%inclusion57 decks402 decks
11%synergy
Carrion Feeder
13%inclusion54 decks402 decks
9%synergy
Forsaken Miner
13%inclusion52 decks402 decks
12%synergy
Creeping Bloodsucker
13%inclusion52 decks402 decks
11%synergy
Bloodletter of Aclazotz
12%inclusion49 decks402 decks
9%synergy
Woe Strider
12%inclusion48 decks402 decks
10%synergy
Reassembling Skeleton
11%inclusion46 decks402 decks
8%synergy
Accursed Marauder
11%inclusion45 decks402 decks
6%synergy
Overeager Apprentice
10%inclusion42 decks402 decks
10%synergy
Cauldron Familiar
10%inclusion42 decks402 decks
9%synergy
Noxious Gearhulk
10%inclusion42 decks402 decks
7%synergy
Yawgmoth, Thran Physician
10%inclusion41 decks402 decks
7%synergy
Phyrexian Devourer
10%inclusion40 decks402 decks
10%synergy
Serrated Scorpion
10%inclusion40 decks402 decks
10%synergy
Pawn of Ulamog
10%inclusion40 decks402 decks
8%synergy
Dread Presence
10%inclusion39 decks402 decks
8%synergy
Greedy Freebooter
9.2%inclusion37 decks402 decks
8%synergy
Basal Thrull
9.0%inclusion36 decks402 decks
9%synergy
Wandering Archaic
8.7%inclusion35 decks402 decks
7%synergy
Ophiomancer
8.7%inclusion35 decks402 decks
5%synergy
Fleshbag Marauder
8.5%inclusion34 decks402 decks
5%synergy
Solemn Simulacrum
8.5%inclusion34 decks402 decks
-4%synergy
Instants
Fell the Profane
66%inclusion265 decks402 decks
57%synergy
Malakir Rebirth
45%inclusion180 decks402 decks
37%synergy
Insidious Dreams
45%inclusion179 decks402 decks
44%synergy
Withering Torment
44%inclusion176 decks402 decks
36%synergy
Imp's Mischief
43%inclusion174 decks402 decks
40%synergy
Saw in Half
33%inclusion131 decks402 decks
28%synergy
Dismember
28%inclusion111 decks402 decks
25%synergy
Rain of Filth
27%inclusion110 decks402 decks
26%synergy
Entomb
25%inclusion101 decks402 decks
18%synergy
Sacrifice
24%inclusion95 decks402 decks
23%synergy
Tainted Pact
20%inclusion82 decks402 decks
17%synergy
Consuming Corruption
19%inclusion75 decks402 decks
17%synergy
Snuff Out
19%inclusion75 decks402 decks
15%synergy
Infernal Grasp
16%inclusion63 decks402 decks
8%synergy
Defile
14%inclusion57 decks402 decks
11%synergy
Cut Down
14%inclusion56 decks402 decks
13%synergy
Not Dead After All
11%inclusion46 decks402 decks
9%synergy
Hagra Mauling
11%inclusion44 decks402 decks
9%synergy
Slaughter Pact
9.5%inclusion38 decks402 decks
9%synergy
Archenemy's Charm
9.2%inclusion37 decks402 decks
8%synergy
Flare of Malice
9.2%inclusion37 decks402 decks
7%synergy
Deadly Dispute
8.7%inclusion35 decks402 decks
-4%synergy
Sheoldred's Edict
8.5%inclusion34 decks402 decks
6%synergy
Fatal Push
7.5%inclusion30 decks402 decks
6%synergy
Village Rites
7.2%inclusion29 decks402 decks
-2%synergy
Go for the Throat
7.0%inclusion28 decks402 decks
0%synergy
Sudden Spoiling
6.7%inclusion27 decks402 decks
5%synergy
Feign Death
6.7%inclusion27 decks402 decks
5%synergy
Crypt Incursion
5.2%inclusion21 decks402 decks
4%synergy
Sorceries
Electroduplicate
100%inclusion3 decks3 decks
98%synergy
Toxic Deluge
52%inclusion208 decks402 decks
34%synergy
Doomsday
44%inclusion178 decks402 decks
44%synergy
Diabolic Intent
40%inclusion161 decks402 decks
32%synergy
Chain of Smog
37%inclusion148 decks402 decks
36%synergy
Praetor's Grasp
34%inclusion138 decks402 decks
32%synergy
Cruel Tutor
34%inclusion136 decks402 decks
33%synergy
Agadeem's Awakening
33%inclusion134 decks402 decks
30%synergy
Grim Tutor
33%inclusion134 decks402 decks
29%synergy
Insatiable Avarice
30%inclusion122 decks402 decks
28%synergy
Exsanguinate
28%inclusion114 decks402 decks
22%synergy
Peer into the Abyss
23%inclusion92 decks402 decks
20%synergy
Profane Tutor
22%inclusion88 decks402 decks
20%synergy
Yawgmoth's Will
22%inclusion87 decks402 decks
20%synergy
Bubbling Muck
22%inclusion87 decks402 decks
20%synergy
Night's Whisper
20%inclusion80 decks402 decks
11%synergy
Dark Petition
19%inclusion76 decks402 decks
18%synergy
Sign in Blood
17%inclusion68 decks402 decks
8%synergy
Damnation
13%inclusion54 decks402 decks
7%synergy
Diabolic Tutor
10%inclusion39 decks402 decks
4%synergy
Victimize
8.7%inclusion35 decks402 decks
-4%synergy
Torment of Hailfire
8.0%inclusion32 decks402 decks
4%synergy
Pelakka Predation
7.5%inclusion30 decks402 decks
7%synergy
Zof Consumption
7.2%inclusion29 decks402 decks
7%synergy
Beseech the Queen
5.2%inclusion21 decks402 decks
4%synergy
Utility Artifacts
Wishclaw Talisman
52%inclusion208 decks402 decks
47%synergy
Defense Grid
51%inclusion204 decks402 decks
50%synergy
Bontu's Monument
42%inclusion170 decks402 decks
40%synergy
Conqueror's Flail
31%inclusion123 decks402 decks
30%synergy
Codex Shredder
28%inclusion114 decks402 decks
28%synergy
Scroll Rack
28%inclusion114 decks402 decks
27%synergy
The Darkness Crystal
24%inclusion97 decks402 decks
21%synergy
Manifold Key
24%inclusion96 decks402 decks
22%synergy
Ghoulcaller's Bell
22%inclusion87 decks402 decks
21%synergy
Phyrexian Altar
20%inclusion81 decks402 decks
17%synergy
Demon's Horn
19%inclusion75 decks402 decks
18%synergy
Ashnod's Altar
18%inclusion74 decks402 decks
12%synergy
Conjurer's Bauble
16%inclusion66 decks402 decks
16%synergy
Pyxis of Pandemonium
15%inclusion60 decks402 decks
15%synergy
Wand of Vertebrae
14%inclusion56 decks402 decks
14%synergy
Voltaic Key
13%inclusion52 decks402 decks
12%synergy
Prism Ring
11%inclusion44 decks402 decks
11%synergy
Skullclamp
10%inclusion42 decks402 decks
-1%synergy
Altar of Dementia
10%inclusion39 decks402 decks
7%synergy
Mishra's Bauble
9.0%inclusion36 decks402 decks
8%synergy
Golem's Heart
8.5%inclusion34 decks402 decks
8%synergy
Staff of the Death Magus
8.2%inclusion33 decks402 decks
8%synergy
Brainstone
7.5%inclusion30 decks402 decks
7%synergy
Commander's Plate
7.5%inclusion30 decks402 decks
5%synergy
The Endstone
7.2%inclusion29 decks402 decks
6%synergy
Moonsilver Key
7.2%inclusion29 decks402 decks
6%synergy
Grinding Station
6.5%inclusion26 decks402 decks
6%synergy
Enchantments
Heartless Summoning
34%inclusion137 decks402 decks
33%synergy
Exquisite Blood
34%inclusion137 decks402 decks
29%synergy
Animate Dead
33%inclusion134 decks402 decks
25%synergy
Sanguine Bond
29%inclusion117 decks402 decks
24%synergy
Black Market Connections
26%inclusion105 decks402 decks
14%synergy
Phyrexian Arena
23%inclusion93 decks402 decks
8%synergy
Font of Agonies
12%inclusion49 decks402 decks
12%synergy
The Meathook Massacre
12%inclusion48 decks402 decks
7%synergy
Grave Pact
9.5%inclusion38 decks402 decks
5%synergy
Necromancy
9.2%inclusion37 decks402 decks
6%synergy
Bitterblossom
8.7%inclusion35 decks402 decks
5%synergy
Kaya's Ghostform
8.5%inclusion34 decks402 decks
5%synergy
Bloodchief Ascension
8.5%inclusion34 decks402 decks
5%synergy
Dance of the Dead
7.0%inclusion28 decks402 decks
6%synergy
Bastion of Remembrance
6.2%inclusion25 decks402 decks
0%synergy
Tombstone Stairwell
6.0%inclusion24 decks402 decks
6%synergy
Biotransference
5.5%inclusion22 decks402 decks
5%synergy
Planeswalkers
Professor Onyx
51%inclusion206 decks402 decks
50%synergy
Tezzeret, Cruel Captain
36%inclusion145 decks402 decks
34%synergy
Liliana Vess
18%inclusion71 decks402 decks
17%synergy
Ugin, Eye of the Storms
9.0%inclusion36 decks402 decks
8%synergy
Tevesh Szat, Doom of Fools
6.0%inclusion24 decks402 decks
5%synergy
Utility Lands
Urborg, Tomb of Yawgmoth
65%inclusion261 decks402 decks
56%synergy
Phyrexian Tower
58%inclusion233 decks402 decks
49%synergy
Hall of the Bandit Lord
50%inclusion201 decks402 decks
49%synergy
Urza's Saga
49%inclusion197 decks402 decks
42%synergy
Cabal Coffers
46%inclusion186 decks402 decks
37%synergy
Nykthos, Shrine to Nyx
38%inclusion152 decks402 decks
32%synergy
Crystal Vein
37%inclusion150 decks402 decks
36%synergy
Takenuma, Abandoned Mire
28%inclusion111 decks402 decks
19%synergy
Bojuka Bog
27%inclusion110 decks402 decks
-2%synergy
City of Traitors
26%inclusion105 decks402 decks
25%synergy
Vault of Whispers
26%inclusion104 decks402 decks
22%synergy
Shizo, Death's Storehouse
26%inclusion103 decks402 decks
21%synergy
Peat Bog
25%inclusion101 decks402 decks
25%synergy
Rogue's Passage
25%inclusion100 decks402 decks
5%synergy
Emergence Zone
21%inclusion85 decks402 decks
19%synergy
Cabal Stronghold
20%inclusion80 decks402 decks
17%synergy
Lake of the Dead
18%inclusion73 decks402 decks
18%synergy
Ebon Stronghold
15%inclusion61 decks402 decks
15%synergy
Command Beacon
13%inclusion54 decks402 decks
9%synergy
Swarmyard
13%inclusion53 decks402 decks
12%synergy
Reliquary Tower
13%inclusion53 decks402 decks
-17%synergy
Witch's Cottage
11%inclusion44 decks402 decks
8%synergy
Midgar, City of Mako
10%inclusion42 decks402 decks
7%synergy
War Room
10%inclusion41 decks402 decks
4%synergy
Castle Locthwain
9.5%inclusion38 decks402 decks
6%synergy
High Market
8.2%inclusion33 decks402 decks
6%synergy
The Black Gate
8.2%inclusion33 decks402 decks
6%synergy
Spymaster's Vault
8.2%inclusion33 decks402 decks
6%synergy
Inventors' Fair
7.7%inclusion31 decks402 decks
4%synergy
Deserted Temple
7.2%inclusion29 decks402 decks
6%synergy
Blast Zone
6.5%inclusion26 decks402 decks
5%synergy
Susur Secundi, Void Altar
6.5%inclusion26 decks402 decks
4%synergy
Mortuary Mire
6.5%inclusion26 decks402 decks
2%synergy
Barad-dûr
5.7%inclusion23 decks402 decks
4%synergy
Mana Artifacts
Sol Ring
96%inclusion385 decks402 decks
12%synergy
Arcane Signet
85%inclusion340 decks402 decks
12%synergy
Lotus Petal
62%inclusion248 decks402 decks
55%synergy
The Soul Stone
51%inclusion205 decks401 decks
47%synergy
Fellwar Stone
50%inclusion202 decks402 decks
30%synergy
Mind Stone
38%inclusion152 decks402 decks
23%synergy
Mox Opal
38%inclusion151 decks402 decks
33%synergy
Grim Monolith
29%inclusion118 decks402 decks
27%synergy
Mox Diamond
28%inclusion112 decks402 decks
24%synergy
Lion's Eye Diamond
27%inclusion107 decks402 decks
25%synergy
Mox Amber
24%inclusion98 decks402 decks
20%synergy
Jeweled Amulet
21%inclusion84 decks402 decks
20%synergy
Thought Vessel
18%inclusion71 decks402 decks
0%synergy
Chromatic Sphere
17%inclusion70 decks402 decks
17%synergy
Chromatic Star
17%inclusion70 decks402 decks
17%synergy
Everflowing Chalice
15%inclusion62 decks402 decks
11%synergy
Springleaf Drum
9.5%inclusion38 decks402 decks
7%synergy
Charcoal Diamond
6.7%inclusion27 decks402 decks
3%synergy
Lotus Bloom
6.5%inclusion26 decks402 decks
6%synergy
Lands
Gemstone Caverns
43%inclusion172 decks402 decks
38%synergy
Bloodstained Mire
39%inclusion157 decks402 decks
28%synergy
Polluted Delta
37%inclusion150 decks402 decks
25%synergy
Marsh Flats
37%inclusion149 decks402 decks
26%synergy
Verdant Catacombs
37%inclusion147 decks402 decks
26%synergy
Cavern of Souls
30%inclusion121 decks402 decks
23%synergy
Prismatic Vista
29%inclusion118 decks402 decks
25%synergy
Talon Gates of Madara
12%inclusion49 decks402 decks
10%synergy
Command Tower
7.7%inclusion31 decks402 decks
-67%synergy
Daily Bugle Building
7.5%inclusion30 decks398 decks
7%synergy
Mana Confluence
6.7%inclusion27 decks402 decks
0%synergy
Plaza of Heroes
6.5%inclusion26 decks402 decks
4%synergy
Urza's Cave
6.0%inclusion24 decks402 decks
3%synergy
Fabled Passage
5.5%inclusion22 decks402 decks
-4%synergy
Demolition Field
5.2%inclusion21 decks402 decks
2%synergy