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
Infinite +1/+1 counters on a creature
Gwenom, Remorseless
12%inclusion434 decks3.58K decks
Sephiroth, Fabled SOLDIER
0.2%inclusion55 decks23.7K decks
Braids, Arisen Nightmare
0.1%inclusion5 decks8.15K decks
Yawgmoth, Thran Physician
0.0%inclusion3 decks6.63K decks
The Ghoul, Gunslinger
0.2%inclusion3 decks1.60K decks
Shadow the Hedgehog
0.0%inclusion2 decks9.71K decks
Syr Konrad, the Grim
0.0%inclusion2 decks5.65K decks
Ayara, First of Locthwain
0.0%inclusion2 decks6.59K decks
Kalitas, Bloodchief of Ghet
1.2%inclusion1 decks85 decks
Sengir, the Dark Baron // Tevesh Szat, Doom of Fools
0.3%inclusion1 decks304 decks
Gollum, Patient Plotter
0.6%inclusion1 decks157 decks
Valgavoth, Terror Eater
0.0%inclusion1 decks3.81K decks
Witch-king of Angmar
0.1%inclusion1 decks913 decks
Sheoldred, the Apocalypse
0.0%inclusion1 decks11.1K decks
Mikaeus, the Unhallowed
0.1%inclusion1 decks2K decks
Shadowheart, Dark Justiciar // Master Chef
0.1%inclusion1 decks1.29K decks
Nalia de'Arnise
0.0%inclusion1 decks2.88K decks
Lurrus of the Dream-Den
0.0%inclusion1 decks2.77K decks
New Cards
Cauldron of Essence
100%inclusion1 decks1 decks
93%synergy
Dina's Guidance
100%inclusion1 decks1 decks
97%synergy
Immoral Bargain
100%inclusion1 decks1 decks
97%synergy
Slumbering Trudge
100%inclusion1 decks1 decks
99%synergy
Turbulent Fen
100%inclusion1 decks1 decks
95%synergy
High Synergy Cards
Sensei's Divining Top
87%inclusion455 decks524 decks
82%synergy
Aetherflux Reservoir
82%inclusion431 decks524 decks
79%synergy
Viscera Seer
85%inclusion447 decks524 decks
77%synergy
Culling the Weak
78%inclusion408 decks524 decks
74%synergy
Blood Pet
74%inclusion387 decks524 decks
73%synergy
Dark Ritual
96%inclusion505 decks524 decks
72%synergy
Jet Medallion
74%inclusion387 decks524 decks
70%synergy
Tendrils of Agony
70%inclusion369 decks524 decks
70%synergy
Lavaspur Boots
69%inclusion362 decks524 decks
68%synergy
Cabal Ritual
72%inclusion379 decks524 decks
67%synergy
Top Cards
Lightning Greaves
82%inclusion429 decks524 decks
57%synergy
Reanimate
71%inclusion371 decks524 decks
52%synergy
Scheming Symmetry
69%inclusion360 decks524 decks
67%synergy
Death Cultist
65%inclusion343 decks524 decks
65%synergy
Deadly Rollick
59%inclusion310 decks524 decks
45%synergy
Crashing Drawbridge
59%inclusion307 decks524 decks
57%synergy
Feed the Swarm
58%inclusion305 decks524 decks
42%synergy
Doom Whisperer
57%inclusion300 decks524 decks
55%synergy
Beseech the Mirror
56%inclusion292 decks524 decks
53%synergy
Swiftfoot Boots
56%inclusion292 decks524 decks
29%synergy
Game Changers
Vampiric Tutor
67%inclusion351 decks524 decks
52%synergy
Necropotence
65%inclusion340 decks524 decks
60%synergy
Demonic Tutor
60%inclusion314 decks524 decks
41%synergy
Ancient Tomb
53%inclusion276 decks524 decks
43%synergy
Orcish Bowmasters
50%inclusion260 decks524 decks
41%synergy
Mana Vault
47%inclusion247 decks524 decks
41%synergy
Chrome Mox
45%inclusion235 decks524 decks
39%synergy
Imperial Seal
44%inclusion231 decks524 decks
39%synergy
Opposition Agent
42%inclusion219 decks524 decks
37%synergy
The One Ring
41%inclusion213 decks524 decks
33%synergy
Creatures
Dualcaster Mage
100%inclusion3 decks3 decks
96%synergy
Pinnacle Monk
100%inclusion3 decks3 decks
95%synergy
Birds of Paradise
100%inclusion3 decks3 decks
72%synergy
Blood Artist
55%inclusion288 decks524 decks
44%synergy
Sheoldred, the Apocalypse
53%inclusion276 decks524 decks
48%synergy
Boggart Trawler
52%inclusion273 decks524 decks
48%synergy
Crypt Ghast
50%inclusion264 decks524 decks
45%synergy
Dauthi Voidwalker
49%inclusion255 decks524 decks
42%synergy
K'rrik, Son of Yawgmoth
39%inclusion205 decks524 decks
37%synergy
Ornithopter
34%inclusion179 decks524 decks
32%synergy
Bloodthirsty Conqueror
34%inclusion178 decks524 decks
30%synergy
Zulaport Cutthroat
33%inclusion175 decks524 decks
25%synergy
Enduring Tenacity
32%inclusion167 decks524 decks
29%synergy
Ayara, First of Locthwain
31%inclusion160 decks524 decks
27%synergy
Memnite
30%inclusion156 decks524 decks
29%synergy
Shard of the Nightbringer
30%inclusion155 decks524 decks
29%synergy
Warren Soultrader
28%inclusion149 decks524 decks
23%synergy
Vito, Thorn of the Dusk Rose
28%inclusion148 decks524 decks
23%synergy
Phyrexian Walker
25%inclusion132 decks524 decks
25%synergy
Gravecrawler
24%inclusion124 decks524 decks
20%synergy
Vilis, Broker of Blood
19%inclusion102 decks524 decks
17%synergy
Diamond Lion
19%inclusion99 decks524 decks
19%synergy
Shield Sphere
19%inclusion98 decks524 decks
18%synergy
Hoarding Broodlord
19%inclusion97 decks524 decks
17%synergy
Braids, Arisen Nightmare
18%inclusion92 decks524 decks
10%synergy
Pitiless Plunderer
18%inclusion92 decks524 decks
9%synergy
Sephiroth, Fabled SOLDIER
17%inclusion87 decks524 decks
14%synergy
Forsaken Miner
16%inclusion85 decks524 decks
15%synergy
Diamond Mare
15%inclusion80 decks524 decks
15%synergy
Ancient Cellarspawn
15%inclusion80 decks524 decks
14%synergy
Reassembling Skeleton
14%inclusion71 decks524 decks
10%synergy
Accursed Marauder
13%inclusion70 decks524 decks
8%synergy
Carrion Feeder
13%inclusion69 decks524 decks
9%synergy
Woe Strider
13%inclusion68 decks524 decks
11%synergy
Yawgmoth, Thran Physician
13%inclusion67 decks524 decks
9%synergy
Marauding Blight-Priest
13%inclusion66 decks524 decks
10%synergy
Bloodletter of Aclazotz
12%inclusion65 decks524 decks
9%synergy
Pawn of Ulamog
11%inclusion60 decks524 decks
10%synergy
Creeping Bloodsucker
11%inclusion59 decks524 decks
9%synergy
Ophiomancer
11%inclusion58 decks524 decks
7%synergy
Fleshbag Marauder
11%inclusion57 decks524 decks
7%synergy
Overeager Apprentice
11%inclusion56 decks524 decks
11%synergy
Gwenom, Remorseless
11%inclusion55 decks523 decks
9%synergy
Noxious Gearhulk
10%inclusion54 decks524 decks
7%synergy
Dream Beavers
10%inclusion19 decks192 decks
10%synergy
Phyrexian Devourer
10%inclusion50 decks524 decks
9%synergy
Cauldron Familiar
10%inclusion50 decks524 decks
8%synergy
Nine-Lives Familiar
10%inclusion50 decks524 decks
8%synergy
Dread Presence
9.4%inclusion49 decks524 decks
8%synergy
Merciless Executioner
9.4%inclusion49 decks524 decks
8%synergy
Instants
Swords to Plowshares
100%inclusion3 decks3 decks
39%synergy
Fell the Profane
66%inclusion345 decks524 decks
57%synergy
Malakir Rebirth
48%inclusion254 decks524 decks
40%synergy
Withering Torment
46%inclusion240 decks524 decks
38%synergy
Insidious Dreams
44%inclusion228 decks524 decks
43%synergy
Imp's Mischief
43%inclusion225 decks524 decks
39%synergy
Saw in Half
32%inclusion170 decks524 decks
28%synergy
Dismember
27%inclusion139 decks524 decks
24%synergy
Entomb
25%inclusion131 decks524 decks
18%synergy
Rain of Filth
24%inclusion128 decks524 decks
24%synergy
Sacrifice
21%inclusion109 decks524 decks
20%synergy
Tainted Pact
20%inclusion105 decks524 decks
16%synergy
Snuff Out
19%inclusion102 decks524 decks
16%synergy
Consuming Corruption
16%inclusion85 decks524 decks
15%synergy
Infernal Grasp
15%inclusion79 decks524 decks
7%synergy
Defile
14%inclusion72 decks524 decks
11%synergy
Cut Down
13%inclusion69 decks524 decks
12%synergy
Flare of Malice
12%inclusion62 decks524 decks
9%synergy
Sheoldred's Edict
11%inclusion56 decks524 decks
8%synergy
Archenemy's Charm
10%inclusion52 decks524 decks
9%synergy
Hagra Mauling
10%inclusion51 decks524 decks
8%synergy
Not Dead After All
10%inclusion50 decks524 decks
7%synergy
Deadly Dispute
9.4%inclusion49 decks524 decks
-3%synergy
Slaughter Pact
9.2%inclusion48 decks524 decks
9%synergy
Sudden Spoiling
7.6%inclusion40 decks524 decks
6%synergy
Go for the Throat
7.3%inclusion38 decks524 decks
1%synergy
Fatal Push
7.1%inclusion37 decks524 decks
6%synergy
Village Rites
6.7%inclusion35 decks524 decks
-3%synergy
Crypt Incursion
5.9%inclusion31 decks524 decks
5%synergy
Feign Death
5.5%inclusion29 decks524 decks
3%synergy
Sorceries
Electroduplicate
100%inclusion3 decks3 decks
98%synergy
Toxic Deluge
54%inclusion283 decks524 decks
36%synergy
Doomsday
41%inclusion217 decks524 decks
41%synergy
Diabolic Intent
40%inclusion212 decks524 decks
33%synergy
Chain of Smog
37%inclusion193 decks524 decks
36%synergy
Agadeem's Awakening
35%inclusion185 decks524 decks
32%synergy
Grim Tutor
34%inclusion179 decks524 decks
30%synergy
Cruel Tutor
34%inclusion178 decks524 decks
34%synergy
Praetor's Grasp
33%inclusion175 decks524 decks
31%synergy
Insatiable Avarice
32%inclusion168 decks524 decks
29%synergy
Exsanguinate
28%inclusion146 decks524 decks
21%synergy
Dark Petition
21%inclusion112 decks524 decks
21%synergy
Peer into the Abyss
21%inclusion109 decks524 decks
18%synergy
Yawgmoth's Will
21%inclusion108 decks524 decks
19%synergy
Bubbling Muck
20%inclusion107 decks524 decks
19%synergy
Profane Tutor
20%inclusion105 decks524 decks
18%synergy
Sign in Blood
19%inclusion98 decks524 decks
10%synergy
Night's Whisper
18%inclusion96 decks524 decks
9%synergy
Damnation
12%inclusion65 decks524 decks
6%synergy
Diabolic Tutor
9.0%inclusion47 decks524 decks
4%synergy
Torment of Hailfire
8.6%inclusion45 decks524 decks
4%synergy
Victimize
8.4%inclusion44 decks524 decks
-4%synergy
Zof Consumption
6.7%inclusion35 decks524 decks
6%synergy
Pelakka Predation
6.7%inclusion35 decks524 decks
6%synergy
Blasphemous Edict
6.1%inclusion32 decks524 decks
1%synergy
Beseech the Queen
5.5%inclusion29 decks524 decks
5%synergy
Duress
5.3%inclusion28 decks524 decks
4%synergy
Persist
5.3%inclusion28 decks524 decks
3%synergy
Splinter's Technique
5.1%inclusion13 decks255 decks
4%synergy
Utility Artifacts
Wishclaw Talisman
50%inclusion262 decks524 decks
45%synergy
Defense Grid
49%inclusion257 decks524 decks
48%synergy
Bontu's Monument
43%inclusion224 decks524 decks
41%synergy
Conqueror's Flail
30%inclusion157 decks524 decks
29%synergy
Skateboard
30%inclusion59 decks197 decks
30%synergy
Codex Shredder
28%inclusion146 decks524 decks
27%synergy
The Darkness Crystal
26%inclusion137 decks524 decks
23%synergy
Scroll Rack
25%inclusion133 decks524 decks
24%synergy
Phyrexian Altar
23%inclusion119 decks524 decks
19%synergy
Ghoulcaller's Bell
22%inclusion115 decks524 decks
22%synergy
Manifold Key
21%inclusion112 decks524 decks
20%synergy
Ashnod's Altar
20%inclusion105 decks524 decks
14%synergy
Demon's Horn
17%inclusion91 decks524 decks
17%synergy
Conjurer's Bauble
15%inclusion81 decks524 decks
15%synergy
Wand of Vertebrae
14%inclusion75 decks524 decks
14%synergy
Pyxis of Pandemonium
14%inclusion75 decks524 decks
14%synergy
Skullclamp
12%inclusion65 decks524 decks
1%synergy
Voltaic Key
12%inclusion64 decks524 decks
11%synergy
Altar of Dementia
10%inclusion51 decks524 decks
8%synergy
Prism Ring
9.2%inclusion48 decks524 decks
9%synergy
Mishra's Bauble
9.2%inclusion48 decks524 decks
8%synergy
Staff of the Death Magus
8.6%inclusion45 decks524 decks
8%synergy
Golem's Heart
7.6%inclusion40 decks524 decks
8%synergy
Brainstone
6.9%inclusion36 decks524 decks
7%synergy
Commander's Plate
6.9%inclusion36 decks524 decks
4%synergy
The Endstone
6.7%inclusion35 decks524 decks
6%synergy
Moonsilver Key
6.3%inclusion33 decks524 decks
5%synergy
Whip of Erebos
6.1%inclusion32 decks524 decks
2%synergy
Grinding Station
5.7%inclusion30 decks524 decks
5%synergy
Enchantments
Exquisite Blood
34%inclusion179 decks524 decks
29%synergy
Animate Dead
31%inclusion162 decks524 decks
22%synergy
Heartless Summoning
30%inclusion156 decks524 decks
29%synergy
Sanguine Bond
28%inclusion149 decks524 decks
23%synergy
Black Market Connections
27%inclusion144 decks524 decks
15%synergy
Phyrexian Arena
23%inclusion119 decks524 decks
7%synergy
The Meathook Massacre
14%inclusion72 decks524 decks
9%synergy
Font of Agonies
13%inclusion66 decks524 decks
12%synergy
Grave Pact
12%inclusion61 decks524 decks
7%synergy
Bitterblossom
11%inclusion58 decks524 decks
7%synergy
Bloodchief Ascension
9.0%inclusion47 decks524 decks
5%synergy
Kaya's Ghostform
8.8%inclusion46 decks524 decks
5%synergy
Necromancy
7.6%inclusion40 decks524 decks
5%synergy
Tombstone Stairwell
7.4%inclusion39 decks524 decks
7%synergy
Bastion of Remembrance
7.1%inclusion37 decks524 decks
0%synergy
Biotransference
6.5%inclusion34 decks524 decks
6%synergy
Dance of the Dead
6.1%inclusion32 decks524 decks
5%synergy
Planeswalkers
Professor Onyx
52%inclusion272 decks524 decks
51%synergy
Tezzeret, Cruel Captain
35%inclusion183 decks524 decks
33%synergy
Liliana Vess
16%inclusion85 decks524 decks
16%synergy
Ugin, Eye of the Storms
8.2%inclusion43 decks524 decks
7%synergy
Tevesh Szat, Doom of Fools
7.6%inclusion40 decks524 decks
7%synergy
Utility Lands
Urborg, Tomb of Yawgmoth
69%inclusion362 decks524 decks
60%synergy
Phyrexian Tower
62%inclusion327 decks524 decks
53%synergy
Cabal Coffers
49%inclusion259 decks524 decks
40%synergy
Hall of the Bandit Lord
48%inclusion254 decks524 decks
48%synergy
Urza's Saga
48%inclusion251 decks524 decks
41%synergy
Nykthos, Shrine to Nyx
40%inclusion210 decks524 decks
35%synergy
Crystal Vein
36%inclusion190 decks524 decks
35%synergy
Bojuka Bog
30%inclusion157 decks524 decks
0%synergy
Takenuma, Abandoned Mire
28%inclusion149 decks524 decks
20%synergy
Shizo, Death's Storehouse
27%inclusion140 decks524 decks
22%synergy
City of Traitors
25%inclusion133 decks524 decks
24%synergy
Vault of Whispers
25%inclusion132 decks524 decks
21%synergy
Peat Bog
25%inclusion131 decks524 decks
25%synergy
Rogue's Passage
23%inclusion123 decks524 decks
3%synergy
Cabal Stronghold
19%inclusion102 decks524 decks
16%synergy
Ebon Stronghold
19%inclusion100 decks524 decks
19%synergy
Emergence Zone
19%inclusion100 decks524 decks
17%synergy
Lake of the Dead
17%inclusion90 decks524 decks
17%synergy
Swarmyard
12%inclusion63 decks524 decks
11%synergy
Reliquary Tower
12%inclusion63 decks524 decks
-18%synergy
Witch's Cottage
11%inclusion58 decks524 decks
8%synergy
Midgar, City of Mako
11%inclusion58 decks524 decks
8%synergy
Command Beacon
11%inclusion56 decks524 decks
6%synergy
High Market
10%inclusion54 decks524 decks
8%synergy
Spymaster's Vault
10%inclusion51 decks524 decks
7%synergy
War Room
9.4%inclusion49 decks524 decks
4%synergy
Deserted Temple
9.2%inclusion48 decks524 decks
8%synergy
Blast Zone
9.0%inclusion47 decks524 decks
8%synergy
The Black Gate
8.6%inclusion45 decks524 decks
6%synergy
Castle Locthwain
8.6%inclusion45 decks524 decks
5%synergy
Barad-dûr
7.3%inclusion38 decks524 decks
5%synergy
Susur Secundi, Void Altar
7.3%inclusion38 decks524 decks
5%synergy
Inventors' Fair
7.1%inclusion37 decks524 decks
3%synergy
Mortuary Mire
6.1%inclusion32 decks524 decks
2%synergy
Mana Artifacts
Sol Ring
96%inclusion503 decks524 decks
12%synergy
Arcane Signet
83%inclusion433 decks524 decks
11%synergy
Lotus Petal
58%inclusion303 decks524 decks
51%synergy
The Soul Stone
53%inclusion278 decks523 decks
49%synergy
Fellwar Stone
49%inclusion256 decks524 decks
28%synergy
Mox Opal
36%inclusion191 decks524 decks
32%synergy
Mind Stone
35%inclusion186 decks524 decks
21%synergy
Grim Monolith
29%inclusion153 decks524 decks
27%synergy
Mox Diamond
28%inclusion148 decks524 decks
24%synergy
Lion's Eye Diamond
26%inclusion136 decks524 decks
24%synergy
Mox Amber
24%inclusion124 decks524 decks
19%synergy
Jeweled Amulet
21%inclusion108 decks524 decks
20%synergy
Thought Vessel
17%inclusion90 decks524 decks
0%synergy
Chromatic Star
17%inclusion88 decks524 decks
16%synergy
Chromatic Sphere
15%inclusion81 decks524 decks
15%synergy
Everflowing Chalice
14%inclusion73 decks524 decks
10%synergy
Springleaf Drum
10%inclusion54 decks524 decks
8%synergy
Charcoal Diamond
6.9%inclusion36 decks524 decks
3%synergy
Lotus Bloom
6.5%inclusion34 decks524 decks
6%synergy
Lands
Underground Mortuary
100%inclusion3 decks3 decks
87%synergy
Bayou
100%inclusion3 decks3 decks
87%synergy
Undergrowth Stadium
100%inclusion3 decks3 decks
76%synergy
Caves of Koilos
100%inclusion3 decks3 decks
71%synergy
Isolated Chapel
100%inclusion3 decks3 decks
66%synergy
Godless Shrine
100%inclusion3 decks3 decks
59%synergy
Gemstone Caverns
43%inclusion226 decks524 decks
38%synergy
Bloodstained Mire
39%inclusion205 decks524 decks
28%synergy
Polluted Delta
38%inclusion197 decks524 decks
26%synergy
Marsh Flats
36%inclusion189 decks524 decks
26%synergy
Verdant Catacombs
35%inclusion184 decks524 decks
24%synergy
Cavern of Souls
32%inclusion167 decks524 decks
25%synergy
Prismatic Vista
30%inclusion157 decks524 decks
25%synergy
Talon Gates of Madara
12%inclusion65 decks524 decks
10%synergy
Urza's Cave
7.6%inclusion40 decks524 decks
5%synergy
Mana Confluence
7.1%inclusion37 decks524 decks
0%synergy
Command Tower
7.1%inclusion37 decks524 decks
-67%synergy
Daily Bugle Building
6.5%inclusion34 decks520 decks
6%synergy
Plaza of Heroes
5.5%inclusion29 decks524 decks
3%synergy
Demolition Field
5.5%inclusion29 decks524 decks
2%synergy
Fabled Passage
5.3%inclusion28 decks524 decks
-4%synergy