Mortuary
Cauldron Familiar
Umbral Collar Zealot
Bolas's Citadel

   Prerequisites

What do I need to start this combo?
Cauldron Familiar in hand or in your library (Cauldron Familiar on top of your library in your library).
All other permanents on the battlefield.
You have a life total of at least 2 if Cauldron Familiar is on top of your library.
if Cauldron Familiar is in your hand available

   Steps

How does this combo work?
1
Cast Cauldron Familiar either from your hand or from the top of your library by paying or 1 life respectively.
2
When Cauldron Familiar enters, it triggers, causing each opponent to lose 1 life and you to gain 1 life.
3
Activate Umbral Collar Zealot by sacrificing Cauldron Familiar.
4
When Cauldron Familiar dies, Mortuary triggers, putting Cauldron Familiar 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 storm count
Infinite lifeloss
Gwenom, Remorseless
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Enchantments
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51%synergy
Animate Dead
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39%synergy
Font of Agonies
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32%synergy
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22%synergy
Phyrexian Arena
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Sanguine Bond
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16%synergy
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14%synergy
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Bloodchief Ascension
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Haunted Crossroads
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Planeswalkers
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27%synergy
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Utility Lands
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41%synergy
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Rogue's Passage
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Spymaster's Vault
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34%synergy
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28%synergy
The Black Gate
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29%synergy
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28%synergy
Ebon Stronghold
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32%synergy
Bonders' Enclave
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24%synergy
Phyrexian Tower
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18%synergy
Amonkhet Raceway
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24%synergy
Crystal Vein
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18%synergy
Bojuka Bog
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-10%synergy
Shizo, Death's Storehouse
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13%synergy
Nykthos, Shrine to Nyx
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12%synergy
Witch's Cottage
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10%synergy
Command Beacon
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9%synergy
Peat Bog
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11%synergy
Emergence Zone
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9%synergy
Lake of the Dead
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9%synergy
Vault of Whispers
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5%synergy
Takenuma, Abandoned Mire
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1%synergy
Blast Zone
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7%synergy
Cabal Stronghold
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5%synergy
Mortuary Mire
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4%synergy
City of Traitors
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5%synergy
Reliquary Tower
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Mana Artifacts
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15%synergy
Arcane Signet
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9%synergy
Fellwar Stone
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41%synergy
Lotus Petal
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49%synergy
The Soul Stone
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46%synergy
Mind Stone
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15%synergy
Mox Opal
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17%synergy
Thought Vessel
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-2%synergy
Chromatic Sphere
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9%synergy
Lotus Bloom
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9%synergy
Jeweled Amulet
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9%synergy
Springleaf Drum
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7%synergy
Chromatic Star
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7%synergy
Everflowing Chalice
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3%synergy
Mox Amber
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3%synergy
Mox Tantalite
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5%synergy
Sol Talisman
5.8%inclusion3 decks52 decks
5%synergy
Prismatic Lens
5.8%inclusion3 decks52 decks
5%synergy
Lion's Eye Diamond
5.8%inclusion3 decks52 decks
4%synergy
Charcoal Diamond
5.8%inclusion3 decks52 decks
2%synergy
Lands
Plaza of Heroes
33%inclusion17 decks52 decks
30%synergy
Demolition Field
29%inclusion15 decks52 decks
26%synergy
Daily Bugle Building
27%inclusion14 decks52 decks
26%synergy
Marsh Flats
23%inclusion12 decks52 decks
13%synergy
Bloodstained Mire
21%inclusion11 decks52 decks
10%synergy
Polluted Delta
21%inclusion11 decks52 decks
9%synergy
Gemstone Caverns
19%inclusion10 decks52 decks
14%synergy
Verdant Catacombs
19%inclusion10 decks52 decks
8%synergy
Cavern of Souls
17%inclusion9 decks52 decks
10%synergy
Fabled Passage
17%inclusion9 decks52 decks
8%synergy
Prismatic Vista
12%inclusion6 decks52 decks
7%synergy
Mana Confluence
10%inclusion5 decks52 decks
3%synergy
Command Tower
10%inclusion5 decks52 decks
-65%synergy
Talon Gates of Madara
5.8%inclusion3 decks52 decks
3%synergy
Ash Barrens
5.8%inclusion3 decks52 decks
1%synergy
City of Brass
5.8%inclusion3 decks52 decks
-2%synergy