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
12%inclusion376 decks3.22K decks
Sephiroth, Fabled SOLDIER
0.2%inclusion39 decks21.6K decks
Braids, Arisen Nightmare
0.1%inclusion4 decks7.96K decks
Yawgmoth, Thran Physician
0.0%inclusion3 decks6.50K decks
Shadow the Hedgehog
0.0%inclusion2 decks9.07K decks
Syr Konrad, the Grim
0.0%inclusion2 decks5.53K decks
The Ghoul, Gunslinger
0.2%inclusion2 decks1.23K decks
Ayara, First of Locthwain
0.0%inclusion2 decks6.36K decks
Kalitas, Bloodchief of Ghet
1.2%inclusion1 decks83 decks
Sengir, the Dark Baron // Tevesh Szat, Doom of Fools
0.3%inclusion1 decks304 decks
Gollum, Patient Plotter
0.7%inclusion1 decks148 decks
Valgavoth, Terror Eater
0.0%inclusion1 decks3.63K decks
Witch-king of Angmar
0.1%inclusion1 decks873 decks
Mikaeus, the Unhallowed
0.1%inclusion1 decks1.92K decks
Nalia de'Arnise
0.0%inclusion1 decks2.86K decks
Lurrus of the Dream-Den
0.0%inclusion1 decks2.72K decks
Imskir Iron-Eater
0.0%inclusion1 decks5.11K decks
Acererak the Archlich
0.0%inclusion1 decks2.05K decks
New Cards
Hexing Squelcher
100%inclusion1 decks1 decks
91%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
22%inclusion21 decks94 decks
22%synergy
High Synergy Cards
Sensei's Divining Top
88%inclusion389 decks444 decks
83%synergy
Aetherflux Reservoir
83%inclusion369 decks444 decks
80%synergy
Viscera Seer
86%inclusion381 decks444 decks
78%synergy
Blood Pet
75%inclusion334 decks444 decks
74%synergy
Culling the Weak
78%inclusion345 decks444 decks
73%synergy
Dark Ritual
96%inclusion428 decks444 decks
72%synergy
Jet Medallion
74%inclusion330 decks444 decks
71%synergy
Tendrils of Agony
71%inclusion314 decks444 decks
70%synergy
Cabal Ritual
74%inclusion330 decks444 decks
69%synergy
Lavaspur Boots
69%inclusion308 decks444 decks
68%synergy
Top Cards
Lightning Greaves
82%inclusion365 decks444 decks
57%synergy
Reanimate
70%inclusion313 decks444 decks
51%synergy
Scheming Symmetry
70%inclusion309 decks444 decks
68%synergy
Death Cultist
67%inclusion299 decks444 decks
67%synergy
Crashing Drawbridge
59%inclusion263 decks444 decks
58%synergy
Doom Whisperer
59%inclusion260 decks444 decks
57%synergy
Feed the Swarm
59%inclusion260 decks444 decks
43%synergy
Deadly Rollick
57%inclusion255 decks444 decks
44%synergy
Swiftfoot Boots
57%inclusion252 decks444 decks
30%synergy
Beseech the Mirror
56%inclusion250 decks444 decks
53%synergy
Game Changers
Vampiric Tutor
67%inclusion298 decks444 decks
52%synergy
Necropotence
65%inclusion288 decks444 decks
60%synergy
Demonic Tutor
59%inclusion264 decks444 decks
40%synergy
Ancient Tomb
54%inclusion238 decks444 decks
44%synergy
Orcish Bowmasters
50%inclusion221 decks444 decks
41%synergy
Mana Vault
49%inclusion216 decks444 decks
43%synergy
Chrome Mox
46%inclusion205 decks444 decks
40%synergy
Imperial Seal
45%inclusion200 decks444 decks
40%synergy
Opposition Agent
42%inclusion187 decks444 decks
37%synergy
The One Ring
41%inclusion183 decks444 decks
33%synergy
Creatures
Dualcaster Mage
100%inclusion3 decks3 decks
96%synergy
Pinnacle Monk
100%inclusion3 decks3 decks
95%synergy
Blood Artist
54%inclusion239 decks444 decks
42%synergy
Sheoldred, the Apocalypse
52%inclusion230 decks444 decks
47%synergy
Boggart Trawler
51%inclusion228 decks444 decks
47%synergy
Crypt Ghast
50%inclusion221 decks444 decks
45%synergy
Dauthi Voidwalker
49%inclusion216 decks444 decks
42%synergy
K'rrik, Son of Yawgmoth
39%inclusion175 decks444 decks
37%synergy
Ornithopter
34%inclusion150 decks444 decks
32%synergy
Bloodthirsty Conqueror
34%inclusion150 decks444 decks
30%synergy
Zulaport Cutthroat
33%inclusion145 decks444 decks
24%synergy
Enduring Tenacity
32%inclusion141 decks444 decks
29%synergy
Shard of the Nightbringer
30%inclusion133 decks444 decks
29%synergy
Memnite
30%inclusion133 decks444 decks
29%synergy
Ayara, First of Locthwain
30%inclusion133 decks444 decks
27%synergy
Vito, Thorn of the Dusk Rose
28%inclusion125 decks444 decks
23%synergy
Warren Soultrader
28%inclusion123 decks444 decks
22%synergy
Phyrexian Walker
26%inclusion116 decks444 decks
26%synergy
Gravecrawler
21%inclusion95 decks444 decks
18%synergy
Vilis, Broker of Blood
21%inclusion94 decks444 decks
18%synergy
Hoarding Broodlord
20%inclusion89 decks444 decks
18%synergy
Shield Sphere
19%inclusion84 decks444 decks
19%synergy
Diamond Lion
18%inclusion79 decks444 decks
18%synergy
Sephiroth, Fabled SOLDIER
17%inclusion76 decks444 decks
15%synergy
Diamond Mare
16%inclusion73 decks444 decks
16%synergy
Braids, Arisen Nightmare
16%inclusion72 decks444 decks
9%synergy
Pitiless Plunderer
16%inclusion71 decks444 decks
7%synergy
Ancient Cellarspawn
16%inclusion70 decks444 decks
14%synergy
Forsaken Miner
14%inclusion63 decks444 decks
13%synergy
Marauding Blight-Priest
13%inclusion58 decks444 decks
10%synergy
Carrion Feeder
13%inclusion58 decks444 decks
9%synergy
Woe Strider
13%inclusion56 decks444 decks
11%synergy
Creeping Bloodsucker
12%inclusion55 decks444 decks
10%synergy
Bloodletter of Aclazotz
12%inclusion55 decks444 decks
9%synergy
Accursed Marauder
12%inclusion52 decks444 decks
6%synergy
Reassembling Skeleton
11%inclusion51 decks444 decks
8%synergy
Yawgmoth, Thran Physician
11%inclusion49 decks444 decks
8%synergy
Overeager Apprentice
10%inclusion46 decks444 decks
10%synergy
Pawn of Ulamog
10%inclusion46 decks444 decks
8%synergy
Cauldron Familiar
10%inclusion45 decks444 decks
9%synergy
Phyrexian Devourer
10%inclusion43 decks444 decks
10%synergy
Dread Presence
10%inclusion43 decks444 decks
8%synergy
Noxious Gearhulk
10%inclusion43 decks444 decks
7%synergy
Ophiomancer
10%inclusion43 decks444 decks
6%synergy
Serrated Scorpion
9.5%inclusion42 decks444 decks
9%synergy
Greedy Freebooter
9.2%inclusion41 decks444 decks
8%synergy
Fleshbag Marauder
9.2%inclusion41 decks444 decks
6%synergy
Gwenom, Remorseless
9.0%inclusion40 decks443 decks
8%synergy
Merciless Executioner
8.8%inclusion39 decks444 decks
7%synergy
Wandering Archaic
8.6%inclusion38 decks444 decks
7%synergy
Instants
Fell the Profane
66%inclusion292 decks444 decks
57%synergy
Malakir Rebirth
46%inclusion206 decks444 decks
38%synergy
Insidious Dreams
44%inclusion197 decks444 decks
44%synergy
Withering Torment
44%inclusion196 decks444 decks
36%synergy
Imp's Mischief
42%inclusion187 decks444 decks
38%synergy
Saw in Half
33%inclusion148 decks444 decks
29%synergy
Rain of Filth
26%inclusion117 decks444 decks
25%synergy
Dismember
26%inclusion117 decks444 decks
23%synergy
Entomb
25%inclusion113 decks444 decks
19%synergy
Sacrifice
23%inclusion103 decks444 decks
22%synergy
Tainted Pact
19%inclusion85 decks444 decks
16%synergy
Snuff Out
19%inclusion83 decks444 decks
15%synergy
Consuming Corruption
18%inclusion78 decks444 decks
16%synergy
Infernal Grasp
16%inclusion70 decks444 decks
8%synergy
Cut Down
14%inclusion62 decks444 decks
13%synergy
Defile
14%inclusion61 decks444 decks
11%synergy
Not Dead After All
11%inclusion48 decks444 decks
8%synergy
Hagra Mauling
11%inclusion47 decks444 decks
9%synergy
Slaughter Pact
10%inclusion46 decks444 decks
10%synergy
Flare of Malice
10%inclusion46 decks444 decks
8%synergy
Archenemy's Charm
9.5%inclusion42 decks444 decks
8%synergy
Sheoldred's Edict
9.5%inclusion42 decks444 decks
7%synergy
Deadly Dispute
8.3%inclusion37 decks444 decks
-4%synergy
Fatal Push
7.7%inclusion34 decks444 decks
7%synergy
Sudden Spoiling
7.4%inclusion33 decks444 decks
6%synergy
Go for the Throat
7.0%inclusion31 decks444 decks
0%synergy
Village Rites
7.0%inclusion31 decks444 decks
-2%synergy
Feign Death
6.3%inclusion28 decks444 decks
4%synergy
Crypt Incursion
6.1%inclusion27 decks444 decks
5%synergy
Force of Despair
5.2%inclusion23 decks444 decks
4%synergy
Sorceries
Electroduplicate
100%inclusion3 decks3 decks
98%synergy
Toxic Deluge
53%inclusion235 decks444 decks
35%synergy
Doomsday
44%inclusion194 decks444 decks
43%synergy
Diabolic Intent
39%inclusion174 decks444 decks
31%synergy
Chain of Smog
36%inclusion160 decks444 decks
35%synergy
Agadeem's Awakening
35%inclusion154 decks444 decks
32%synergy
Praetor's Grasp
34%inclusion151 decks444 decks
32%synergy
Grim Tutor
34%inclusion151 decks444 decks
30%synergy
Cruel Tutor
34%inclusion149 decks444 decks
33%synergy
Insatiable Avarice
31%inclusion137 decks444 decks
28%synergy
Exsanguinate
29%inclusion127 decks444 decks
22%synergy
Peer into the Abyss
23%inclusion103 decks444 decks
21%synergy
Yawgmoth's Will
21%inclusion95 decks444 decks
20%synergy
Profane Tutor
21%inclusion95 decks444 decks
19%synergy
Bubbling Muck
21%inclusion94 decks444 decks
20%synergy
Dark Petition
20%inclusion91 decks444 decks
20%synergy
Night's Whisper
19%inclusion84 decks444 decks
10%synergy
Sign in Blood
18%inclusion78 decks444 decks
9%synergy
Damnation
13%inclusion58 decks444 decks
7%synergy
Diabolic Tutor
9.2%inclusion41 decks444 decks
4%synergy
Victimize
8.6%inclusion38 decks444 decks
-4%synergy
Torment of Hailfire
8.1%inclusion36 decks444 decks
4%synergy
Pelakka Predation
7.4%inclusion33 decks444 decks
7%synergy
Zof Consumption
6.8%inclusion30 decks444 decks
7%synergy
Duress
5.6%inclusion25 decks444 decks
5%synergy
Blasphemous Edict
5.6%inclusion25 decks444 decks
0%synergy
Utility Artifacts
Defense Grid
51%inclusion226 decks444 decks
50%synergy
Wishclaw Talisman
51%inclusion226 decks444 decks
46%synergy
Bontu's Monument
43%inclusion191 decks444 decks
41%synergy
Conqueror's Flail
30%inclusion134 decks444 decks
29%synergy
Codex Shredder
28%inclusion125 decks444 decks
27%synergy
Scroll Rack
27%inclusion119 decks444 decks
26%synergy
The Darkness Crystal
24%inclusion106 decks444 decks
21%synergy
Manifold Key
23%inclusion102 decks444 decks
21%synergy
Ghoulcaller's Bell
22%inclusion98 decks444 decks
22%synergy
Phyrexian Altar
22%inclusion96 decks444 decks
18%synergy
Ashnod's Altar
18%inclusion82 decks444 decks
12%synergy
Demon's Horn
18%inclusion79 decks444 decks
18%synergy
Conjurer's Bauble
17%inclusion74 decks444 decks
16%synergy
Pyxis of Pandemonium
15%inclusion65 decks444 decks
15%synergy
Wand of Vertebrae
14%inclusion60 decks444 decks
13%synergy
Voltaic Key
13%inclusion56 decks444 decks
12%synergy
Skullclamp
11%inclusion51 decks444 decks
0%synergy
Prism Ring
10%inclusion45 decks444 decks
10%synergy
Mishra's Bauble
9.5%inclusion42 decks444 decks
8%synergy
Altar of Dementia
9.2%inclusion41 decks444 decks
7%synergy
Golem's Heart
8.1%inclusion36 decks444 decks
8%synergy
Staff of the Death Magus
8.1%inclusion36 decks444 decks
8%synergy
Brainstone
7.9%inclusion35 decks444 decks
8%synergy
Commander's Plate
7.0%inclusion31 decks444 decks
5%synergy
The Endstone
6.8%inclusion30 decks444 decks
6%synergy
Moonsilver Key
6.8%inclusion30 decks444 decks
6%synergy
Grinding Station
6.1%inclusion27 decks444 decks
5%synergy
Whip of Erebos
5.4%inclusion24 decks444 decks
2%synergy
Enchantments
Exquisite Blood
34%inclusion151 decks444 decks
29%synergy
Heartless Summoning
34%inclusion149 decks444 decks
32%synergy
Animate Dead
32%inclusion143 decks444 decks
23%synergy
Sanguine Bond
28%inclusion126 decks444 decks
23%synergy
Black Market Connections
27%inclusion120 decks444 decks
15%synergy
Phyrexian Arena
22%inclusion99 decks444 decks
7%synergy
The Meathook Massacre
13%inclusion57 decks444 decks
8%synergy
Font of Agonies
13%inclusion56 decks444 decks
12%synergy
Grave Pact
11%inclusion47 decks444 decks
6%synergy
Bitterblossom
10%inclusion45 decks444 decks
6%synergy
Kaya's Ghostform
9.0%inclusion40 decks444 decks
5%synergy
Bloodchief Ascension
8.8%inclusion39 decks444 decks
5%synergy
Necromancy
8.6%inclusion38 decks444 decks
5%synergy
Tombstone Stairwell
6.8%inclusion30 decks444 decks
7%synergy
Dance of the Dead
6.8%inclusion30 decks444 decks
5%synergy
Bastion of Remembrance
6.5%inclusion29 decks444 decks
0%synergy
Biotransference
6.1%inclusion27 decks444 decks
5%synergy
Planeswalkers
Professor Onyx
51%inclusion225 decks444 decks
49%synergy
Tezzeret, Cruel Captain
36%inclusion158 decks444 decks
34%synergy
Liliana Vess
17%inclusion76 decks444 decks
16%synergy
Ugin, Eye of the Storms
7.9%inclusion35 decks444 decks
7%synergy
Tevesh Szat, Doom of Fools
6.5%inclusion29 decks444 decks
6%synergy
Utility Lands
Urborg, Tomb of Yawgmoth
67%inclusion298 decks444 decks
58%synergy
Phyrexian Tower
59%inclusion264 decks444 decks
51%synergy
Urza's Saga
49%inclusion218 decks444 decks
42%synergy
Hall of the Bandit Lord
49%inclusion217 decks444 decks
48%synergy
Cabal Coffers
48%inclusion213 decks444 decks
38%synergy
Nykthos, Shrine to Nyx
39%inclusion171 decks444 decks
33%synergy
Crystal Vein
37%inclusion166 decks444 decks
36%synergy
Takenuma, Abandoned Mire
28%inclusion126 decks444 decks
20%synergy
Bojuka Bog
28%inclusion123 decks444 decks
-2%synergy
Shizo, Death's Storehouse
27%inclusion118 decks444 decks
22%synergy
City of Traitors
26%inclusion117 decks444 decks
25%synergy
Vault of Whispers
26%inclusion114 decks444 decks
21%synergy
Peat Bog
25%inclusion111 decks444 decks
25%synergy
Rogue's Passage
24%inclusion107 decks444 decks
4%synergy
Emergence Zone
21%inclusion92 decks444 decks
18%synergy
Cabal Stronghold
19%inclusion86 decks444 decks
16%synergy
Lake of the Dead
19%inclusion84 decks444 decks
18%synergy
Ebon Stronghold
17%inclusion74 decks444 decks
16%synergy
Swarmyard
13%inclusion57 decks444 decks
11%synergy
Reliquary Tower
12%inclusion55 decks444 decks
-17%synergy
Command Beacon
12%inclusion53 decks444 decks
7%synergy
Witch's Cottage
11%inclusion49 decks444 decks
8%synergy
Midgar, City of Mako
11%inclusion49 decks444 decks
7%synergy
War Room
10%inclusion44 decks444 decks
4%synergy
High Market
9.2%inclusion41 decks444 decks
7%synergy
Spymaster's Vault
9.2%inclusion41 decks444 decks
7%synergy
Castle Locthwain
9.2%inclusion41 decks444 decks
5%synergy
The Black Gate
9.0%inclusion40 decks444 decks
6%synergy
Deserted Temple
8.3%inclusion37 decks444 decks
7%synergy
Blast Zone
7.7%inclusion34 decks444 decks
7%synergy
Inventors' Fair
7.4%inclusion33 decks444 decks
4%synergy
Susur Secundi, Void Altar
7.0%inclusion31 decks444 decks
5%synergy
Barad-dûr
6.5%inclusion29 decks444 decks
5%synergy
Mortuary Mire
6.5%inclusion29 decks444 decks
2%synergy
Mana Artifacts
Sol Ring
96%inclusion425 decks444 decks
12%synergy
Arcane Signet
84%inclusion371 decks444 decks
11%synergy
Lotus Petal
60%inclusion268 decks444 decks
53%synergy
The Soul Stone
52%inclusion229 decks443 decks
48%synergy
Fellwar Stone
49%inclusion218 decks444 decks
29%synergy
Mox Opal
37%inclusion166 decks444 decks
33%synergy
Mind Stone
36%inclusion160 decks444 decks
22%synergy
Grim Monolith
30%inclusion131 decks444 decks
28%synergy
Mox Diamond
29%inclusion127 decks444 decks
24%synergy
Lion's Eye Diamond
26%inclusion117 decks444 decks
24%synergy
Mox Amber
25%inclusion110 decks444 decks
20%synergy
Jeweled Amulet
22%inclusion96 decks444 decks
21%synergy
Chromatic Star
18%inclusion80 decks444 decks
17%synergy
Chromatic Sphere
17%inclusion76 decks444 decks
17%synergy
Thought Vessel
17%inclusion74 decks444 decks
-1%synergy
Everflowing Chalice
15%inclusion68 decks444 decks
11%synergy
Springleaf Drum
9.5%inclusion42 decks444 decks
7%synergy
Lotus Bloom
7.4%inclusion33 decks444 decks
7%synergy
Charcoal Diamond
6.5%inclusion29 decks444 decks
2%synergy
Lands
Gemstone Caverns
44%inclusion197 decks444 decks
39%synergy
Bloodstained Mire
39%inclusion175 decks444 decks
28%synergy
Polluted Delta
37%inclusion166 decks444 decks
25%synergy
Marsh Flats
36%inclusion160 decks444 decks
25%synergy
Verdant Catacombs
36%inclusion160 decks444 decks
25%synergy
Prismatic Vista
30%inclusion135 decks444 decks
26%synergy
Cavern of Souls
30%inclusion135 decks444 decks
23%synergy
Talon Gates of Madara
11%inclusion50 decks444 decks
9%synergy
Daily Bugle Building
7.5%inclusion33 decks440 decks
7%synergy
Command Tower
7.4%inclusion33 decks444 decks
-67%synergy
Urza's Cave
7.0%inclusion31 decks444 decks
4%synergy
Mana Confluence
6.8%inclusion30 decks444 decks
0%synergy
Plaza of Heroes
6.3%inclusion28 decks444 decks
4%synergy
Demolition Field
5.6%inclusion25 decks444 decks
3%synergy
Fabled Passage
5.6%inclusion25 decks444 decks
-4%synergy