Mairsil, the Pretender
Endling
Cauldron of Souls
Blood Pet
Thousand-Year Elixir

   Prerequisites

What do I need to start this combo?
Mairsil and Thousand-Year Elixir on the battlefield.
All other permanents in exile.

   Steps

How does this combo work?
1
Activate Mairsil using Cauldron of Souls' ability by tapping it, giving itself persist until end of turn.
2
Activate Mairsil using Blood Pet's ability by sacrificing it, adding .
3
When Mairsil dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
4
Activate Mairsil using Endling's third ability by paying , giving Mairsil undying until end of turn.
5
Activate Mairsil using Blood Pet's ability by sacrificing it, adding .
6
When Mairsil dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
7
Repeat.

   Results

What do I get from this combo?
Infinite black mana
Infinite death triggers
Infinite ETB
Infinite LTB
Infinite sacrifice triggers
Mairsil, the Pretender
0.3%inclusion5 decks1.98K decks
High Synergy Cards
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100%inclusion5 decks5 decks
100%synergy
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100%inclusion5 decks5 decks
100%synergy
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100%inclusion5 decks5 decks
100%synergy
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100%inclusion5 decks5 decks
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80%inclusion4 decks5 decks
80%synergy
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80%synergy
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14%synergy
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Creatures
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60%inclusion3 decks5 decks
60%synergy
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60%synergy
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60%synergy
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60%synergy
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60%synergy
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58%synergy
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50%inclusion2 decks4 decks
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40%synergy
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Utility Lands
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17%synergy
Desolate Lighthouse
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Temple of the False God
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Urborg, Tomb of Yawgmoth
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Otawara, Soaring City
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Mana Artifacts
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100%inclusion5 decks5 decks
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10%synergy
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80%inclusion4 decks5 decks
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Talisman of Creativity
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36%synergy
Talisman of Dominance
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31%synergy
Arcane Signet
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Dimir Signet
60%inclusion3 decks5 decks
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25%synergy
Chromatic Orrery
40%inclusion2 decks5 decks
39%synergy
Coveted Jewel
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39%synergy
Rakdos Signet
40%inclusion2 decks5 decks
7%synergy
Ventifact Bottle
20%inclusion1 decks5 decks
20%synergy
Lotus Bloom
20%inclusion1 decks5 decks
19%synergy
Sky Diamond
20%inclusion1 decks5 decks
18%synergy
Sol Talisman
20%inclusion1 decks5 decks
18%synergy
Machine God's Effigy
20%inclusion1 decks5 decks
18%synergy
Basalt Monolith
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18%synergy
Thran Dynamo
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15%synergy
Commander's Sphere
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Lands
Volcanic Island
60%inclusion3 decks5 decks
45%synergy
Underground Sea
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45%synergy
Badlands
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45%synergy
Haunted Ridge
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39%synergy
Shipwreck Marsh
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35%synergy
Stormcarved Coast
60%inclusion3 decks5 decks
35%synergy
Scalding Tarn
60%inclusion3 decks5 decks
28%synergy
Polluted Delta
60%inclusion3 decks5 decks
25%synergy
Bloodstained Mire
60%inclusion3 decks5 decks
25%synergy
Xander's Lounge
60%inclusion3 decks5 decks
20%synergy
Drowned Catacomb
60%inclusion3 decks5 decks
17%synergy
Dragonskull Summit
60%inclusion3 decks5 decks
15%synergy
Steam Vents
60%inclusion3 decks5 decks
15%synergy
Blood Crypt
60%inclusion3 decks5 decks
15%synergy
Sulfur Falls
60%inclusion3 decks5 decks
14%synergy
Watery Grave
60%inclusion3 decks5 decks
12%synergy
Command Tower
60%inclusion3 decks5 decks
-32%synergy
Terramorphic Expanse
40%inclusion2 decks5 decks
21%synergy
Evolving Wilds
40%inclusion2 decks5 decks
16%synergy
Luxury Suite
40%inclusion2 decks5 decks
9%synergy
Morphic Pool
40%inclusion2 decks5 decks
8%synergy
Training Center
40%inclusion2 decks5 decks
8%synergy
Smoldering Marsh
40%inclusion2 decks5 decks
3%synergy
Sunken Hollow
40%inclusion2 decks5 decks
1%synergy
Crumbling Necropolis
40%inclusion2 decks5 decks
-13%synergy
Exotic Orchard
40%inclusion2 decks5 decks
-16%synergy
Scene of the Crime
20%inclusion1 decks5 decks
20%synergy
Power Depot
20%inclusion1 decks5 decks
20%synergy
Demolition Field
20%inclusion1 decks5 decks
18%synergy
Grixis Panorama
20%inclusion1 decks5 decks
17%synergy
Prismatic Vista
20%inclusion1 decks5 decks
17%synergy
Drossforge Bridge
20%inclusion1 decks5 decks
16%synergy
Mistvault Bridge
20%inclusion1 decks5 decks
16%synergy
Silverbluff Bridge
20%inclusion1 decks5 decks
16%synergy
Fabled Passage
20%inclusion1 decks5 decks
13%synergy
Maestros Theater
20%inclusion1 decks5 decks
11%synergy
Myriad Landscape
20%inclusion1 decks5 decks
11%synergy
Marsh Flats
20%inclusion1 decks5 decks
10%synergy
Rakdos Carnarium
20%inclusion1 decks5 decks
10%synergy
Thundering Falls
20%inclusion1 decks5 decks
10%synergy
Raucous Theater
20%inclusion1 decks5 decks
9%synergy
Izzet Boilerworks
20%inclusion1 decks5 decks
9%synergy
Dimir Aqueduct
20%inclusion1 decks5 decks
9%synergy
Temple of Malice
20%inclusion1 decks5 decks
8%synergy
Undercity Sewers
20%inclusion1 decks5 decks
7%synergy
Temple of Deceit
20%inclusion1 decks5 decks
7%synergy
Temple of Epiphany
20%inclusion1 decks5 decks
6%synergy
Sulfurous Springs
20%inclusion1 decks5 decks
-7%synergy
Underground River
20%inclusion1 decks5 decks
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Shivan Reef
20%inclusion1 decks5 decks
-9%synergy