Marneus Calgar
The Watcher in the Water

   Prerequisites

What do I need to start this combo?
Marneus Calgar and The Watcher in the Water on the battlefield.
You have a way to draw a card during an opponent's turn. You have a way to interrupt the loop after drawing your library.

   Steps

How does this combo work?
1
Draw a card during an opponent's turn by triggering Marneus Calgar using his activated ability, or by any other method.
2
The Watcher in the Water triggers, creating a 1/1 Tentacle creature token.
3
When the Tentacle enters the battlefield, Marneus Calgar triggers, causing you to draw a card.
4
Repeat from step 2.
5
After drawing any number of cards, interrupt the mandatory infinite loop by winning the game or removing a combo piece in response to a trigger.

   Results

What do I get from this combo?
Infinite card draw
Infinite draw triggers
Near-infinite creature tokens
Near-infinite ETB
Marneus Calgar
2.5%inclusion407 decks16K decks
Inquisitor Greyfax
0.4%inclusion10 decks2.47K decks
Queza, Augur of Agonies
0.0%inclusion4 decks8.75K decks
Tivit, Seller of Secrets
0.0%inclusion3 decks12.6K decks
Soundwave, Sonic Spy
0.1%inclusion3 decks2.02K decks
Kraum, Ludevic's Opus // Tymna the Weaver
0.0%inclusion3 decks11.1K decks
Temmet, Naktamun's Will
0.0%inclusion1 decks12.3K decks
The Celestial Toymaker
0.0%inclusion1 decks3.13K decks
Alela, Artful Provocateur
0.0%inclusion1 decks15.6K decks
Atraxa, Grand Unifier
0.0%inclusion1 decks16.7K decks
G'raha Tia, Scion Reborn
0.0%inclusion1 decks3.75K decks
The Wandering Minstrel
0.0%inclusion1 decks16.2K decks
Ravos, Soultender // Sakashima of a Thousand Faces
0.4%inclusion1 decks281 decks
Noctis, Prince of Lucis
0.0%inclusion1 decks7.67K decks
Hargilde, Kindly Runechanter // Wernog, Rider's Chaplain
0.1%inclusion1 decks997 decks
Hashaton, Scarab's Fist
0.0%inclusion1 decks23.2K decks
Ertai, the Corrupted
0.1%inclusion1 decks1.05K decks
Zur the Enchanter
0.0%inclusion1 decks15.4K decks
New Cards
Emeritus of Truce
6.3%inclusion2 decks32 decks
Defacing Duskmage
5.3%inclusion2 decks38 decks
Arnyn, Deathbloom Botanist
3.3%inclusion1 decks30 decks
Decorum Dissertation
3.1%inclusion1 decks32 decks
Erode
2.8%inclusion1 decks36 decks
High Synergy Cards
Nadir Kraken
70%inclusion311 decks442 decks
Ashnod's Altar
69%inclusion305 decks442 decks
Kambal, Profiteering Mayor
58%inclusion256 decks442 decks
Lotho, Corrupt Shirriff
62%inclusion275 decks442 decks
Pitiless Plunderer
53%inclusion235 decks442 decks
Mirkwood Bats
52%inclusion231 decks442 decks
Prince Imrahil the Fair
39%inclusion172 decks442 decks
Training Grounds
38%inclusion167 decks442 decks
Warren Soultrader
40%inclusion173 decks436 decks
Skullclamp
45%inclusion198 decks442 decks
Top Cards
Swords to Plowshares
81%inclusion356 decks442 decks
Path to Exile
51%inclusion227 decks442 decks
Counterspell
41%inclusion182 decks442 decks
An Offer You Can't Refuse
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Mondrak, Glory Dominus
36%inclusion160 decks442 decks
Black Market Connections
36%inclusion160 decks442 decks
Dark Ritual
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Elas il-Kor, Sadistic Pilgrim
35%inclusion154 decks442 decks
Charismatic Conqueror
35%inclusion153 decks442 decks
Esper Sentinel
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Game Changers
Smothering Tithe
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Rhystic Study
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Demonic Tutor
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Enlightened Tutor
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Thassa's Oracle
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Ancient Tomb
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The One Ring
19%inclusion84 decks442 decks
Mana Vault
17%inclusion75 decks442 decks
Chrome Mox
17%inclusion73 decks442 decks
Creatures
The Locust God
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Voice of Victory
31%inclusion83 decks264 decks
Ultramarines Honour Guard
30%inclusion133 decks442 decks
Space Marine Devastator
30%inclusion132 decks442 decks
Grim Hireling
30%inclusion131 decks442 decks
Adeline, Resplendent Cathar
29%inclusion129 decks442 decks
Emrakul's Messenger
28%inclusion124 decks436 decks
Commissar Severina Raine
28%inclusion122 decks442 decks
Vexilus Praetor
27%inclusion121 decks442 decks
Company Commander
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Homunculus Horde
25%inclusion87 decks352 decks
Laboratory Maniac
24%inclusion107 decks442 decks
Vanguard Suppressor
24%inclusion105 decks442 decks
Sicarian Infiltrator
24%inclusion104 decks442 decks
Faerie Artisans
23%inclusion101 decks442 decks
Inquisitor Greyfax
23%inclusion101 decks442 decks
Tataru Taru
23%inclusion52 decks230 decks
Thalisse, Reverent Medium
22%inclusion97 decks442 decks
Monastery Mentor
22%inclusion96 decks442 decks
Chasm Skulker
22%inclusion96 decks442 decks
Zulaport Cutthroat
21%inclusion94 decks442 decks
Grand Abolisher
21%inclusion94 decks442 decks
Corpse Knight
21%inclusion93 decks442 decks
Ojer Taq, Deepest Foundation
21%inclusion91 decks442 decks
Stridehangar Automaton
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Tivit, Seller of Secrets
18%inclusion79 decks442 decks
Faerie Mastermind
18%inclusion78 decks442 decks
Bastion Protector
17%inclusion77 decks442 decks
Mischievous Mystic
17%inclusion61 decks352 decks
Junk Winder
17%inclusion76 decks442 decks
Ethereal Investigator
17%inclusion75 decks442 decks
Ocelot Pride
16%inclusion71 decks434 decks
Ophiomancer
16%inclusion69 decks442 decks
Exalted Sunborn
15%inclusion29 decks188 decks
Academy Manufactor
15%inclusion67 decks442 decks
Nadier's Nightblade
15%inclusion66 decks442 decks
Hullbreaker Horror
15%inclusion66 decks442 decks
Zephyrim
15%inclusion65 decks442 decks
Drannith Magistrate
15%inclusion65 decks442 decks
Psychosis Crawler
14%inclusion63 decks442 decks
Blood Artist
14%inclusion61 decks442 decks
Minn, Wily Illusionist
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Ranger-Captain of Eos
13%inclusion59 decks442 decks
Marionette Apprentice
13%inclusion58 decks436 decks
Sanguinary Priest
13%inclusion58 decks442 decks
Jadar, Ghoulcaller of Nephalia
12%inclusion54 decks442 decks
Myrel, Shield of Argive
12%inclusion52 decks442 decks
Forensic Gadgeteer
12%inclusion52 decks442 decks
Epistolary Librarian
12%inclusion51 decks442 decks
Alandra, Sky Dreamer
12%inclusion51 decks442 decks
Instants
Cyclonic Rift
30%inclusion132 decks442 decks
Fierce Guardianship
28%inclusion122 decks442 decks
Swan Song
27%inclusion120 decks442 decks
Deny the Witch
26%inclusion114 decks442 decks
Dovin's Veto
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Vampiric Tutor
25%inclusion110 decks442 decks
Mortify
23%inclusion103 decks442 decks
Mana Drain
23%inclusion101 decks442 decks
Anguished Unmaking
23%inclusion101 decks442 decks
Void Rend
22%inclusion96 decks442 decks
Silence
20%inclusion88 decks442 decks
Force of Will
19%inclusion85 decks442 decks
Deadly Dispute
19%inclusion85 decks442 decks
Borne Upon a Wind
19%inclusion84 decks442 decks
Arcane Denial
18%inclusion81 decks442 decks
Inkshield
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Demonic Consultation
18%inclusion79 decks442 decks
Teferi's Protection
18%inclusion78 decks442 decks
Mystical Tutor
17%inclusion75 decks442 decks
Force of Negation
17%inclusion74 decks442 decks
Utter End
16%inclusion72 decks442 decks
Flusterstorm
16%inclusion70 decks442 decks
Negate
15%inclusion68 decks442 decks
Deadly Rollick
15%inclusion67 decks442 decks
Tainted Pact
14%inclusion63 decks442 decks
Pact of Negation
14%inclusion63 decks442 decks
Entrapment Maneuver
14%inclusion62 decks442 decks
Generous Gift
14%inclusion60 decks442 decks
Mindbreak Trap
13%inclusion59 decks442 decks
Mental Misstep
13%inclusion59 decks442 decks
And They Shall Know No Fear
13%inclusion57 decks442 decks
Officious Interrogation
12%inclusion55 decks442 decks
Sink into Stupor
12%inclusion54 decks436 decks
Dramatic Reversal
12%inclusion52 decks442 decks
Flawless Maneuver
12%inclusion52 decks442 decks
Protect the Negotiators
11%inclusion49 decks442 decks
Akroma's Will
8.8%inclusion39 decks442 decks
Brainstorm
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Fell the Profane
8.0%inclusion35 decks436 decks
Despark
7.9%inclusion35 decks442 decks
Muddle the Mixture
7.7%inclusion34 decks442 decks
Clever Concealment
7.5%inclusion33 decks442 decks
Rootborn Defenses
7.0%inclusion31 decks442 decks
Chain of Vapor
6.8%inclusion30 decks442 decks
Grand Crescendo
6.6%inclusion29 decks442 decks
Stroke of Midnight
6.3%inclusion28 decks442 decks
Into the Flood Maw
6.3%inclusion26 decks414 decks
Strix Serenade
6.0%inclusion26 decks436 decks
Secure the Wastes
5.7%inclusion25 decks442 decks
Malakir Rebirth
5.7%inclusion25 decks442 decks
Sorceries
Martial Coup
22%inclusion98 decks442 decks
Hour of Reckoning
22%inclusion96 decks442 decks
Toxic Deluge
20%inclusion89 decks442 decks
Diabolic Intent
19%inclusion82 decks442 decks
Damn
17%inclusion74 decks442 decks
Collective Effort
16%inclusion69 decks442 decks
Farewell
15%inclusion67 decks442 decks
Exterminatus
14%inclusion63 decks442 decks
Imperial Seal
14%inclusion63 decks442 decks
Launch the Fleet
14%inclusion60 decks442 decks
Sevinne's Reclamation
14%inclusion60 decks442 decks
For the Emperor!
13%inclusion57 decks442 decks
Fell the Mighty
12%inclusion52 decks442 decks
Reanimate
12%inclusion52 decks442 decks
Beseech the Mirror
11%inclusion49 decks442 decks
Supreme Verdict
10%inclusion45 decks442 decks
Windfall
8.4%inclusion37 decks442 decks
Deploy to the Front
7.5%inclusion33 decks442 decks
Fabricate
7.0%inclusion31 decks442 decks
Austere Command
5.9%inclusion26 decks442 decks
Irenicus's Vile Duplication
5.7%inclusion25 decks442 decks
Utility Artifacts
Shorikai, Genesis Engine
27%inclusion118 decks442 decks
Lightning Greaves
26%inclusion117 decks442 decks
Phyrexian Altar
26%inclusion115 decks442 decks
The Golden Throne
26%inclusion113 decks442 decks
Inquisitorial Rosette
21%inclusion92 decks442 decks
Swiftfoot Boots
20%inclusion87 decks442 decks
Thunderhawk Gunship
16%inclusion72 decks442 decks
Oketra's Monument
16%inclusion72 decks442 decks
Wishclaw Talisman
14%inclusion63 decks442 decks
Time Sieve
14%inclusion60 decks442 decks
Rings of Brighthearth
11%inclusion48 decks442 decks
Isochron Scepter
10%inclusion45 decks442 decks
Idol of Oblivion
9.0%inclusion40 decks442 decks
Thopter Fabricator
8.4%inclusion26 decks311 decks
Illusionist's Bracers
6.6%inclusion29 decks442 decks
Tamiyo's Journal
6.3%inclusion28 decks442 decks
Wayfarer's Bauble
6.1%inclusion27 decks442 decks
Thousand Moons Smithy
5.4%inclusion24 decks442 decks
Thopter Foundry
5.2%inclusion23 decks442 decks
Halo Fountain
5.2%inclusion23 decks442 decks
Enchantments
Impact Tremors
75%inclusion3 decks4 decks
Anointed Procession
29%inclusion126 decks442 decks
Mystic Remora
26%inclusion117 decks442 decks
Monologue Tax
25%inclusion109 decks442 decks
Bitterblossom
25%inclusion109 decks442 decks
Bastion of Remembrance
20%inclusion90 decks442 decks
Scuttletide
19%inclusion85 decks442 decks
Caretaker's Talent
17%inclusion69 decks411 decks
Skrelv's Hive
17%inclusion74 decks442 decks
Birth of the Imperium
15%inclusion66 decks442 decks
Amphibian Downpour
14%inclusion60 decks434 decks
Defenders of Humanity
13%inclusion56 decks442 decks
Ominous Seas
12%inclusion52 decks442 decks
Felidar Retreat
12%inclusion52 decks442 decks
Reconnaissance Mission
10%inclusion46 decks442 decks
Blind Obedience
10%inclusion45 decks442 decks
Divine Visitation
8.8%inclusion39 decks442 decks
Intangible Virtue
8.8%inclusion39 decks442 decks
Moonlit Meditation
8.2%inclusion15 decks184 decks
Teferi's Ageless Insight
7.9%inclusion35 decks442 decks
Chivalric Alliance
7.7%inclusion34 decks442 decks
Revel in Riches
7.0%inclusion31 decks442 decks
Obsessive Pursuit
6.8%inclusion8 decks118 decks
Mechanized Production
6.6%inclusion29 decks442 decks
Court of Grace
6.3%inclusion28 decks442 decks
Endless Foot Assault
6.1%inclusion4 decks66 decks
The Meathook Massacre
5.9%inclusion26 decks442 decks
Smuggler's Share
5.7%inclusion25 decks442 decks
Trouble in Pairs
5.7%inclusion25 decks442 decks
Propaganda
5.7%inclusion25 decks442 decks
Legion's Landing
5.4%inclusion24 decks442 decks
Planeswalkers
Elspeth, Storm Slayer
18%inclusion47 decks264 decks
Elspeth, Sun's Champion
14%inclusion63 decks442 decks
Liliana, Dreadhorde General
12%inclusion52 decks442 decks
Jace, Wielder of Mysteries
8.8%inclusion39 decks442 decks
Teferi, Time Raveler
8.8%inclusion39 decks442 decks
Kaya, Geist Hunter
6.3%inclusion28 decks442 decks
Utility Lands
Reliquary Tower
54%inclusion240 decks442 decks
Otawara, Soaring City
24%inclusion104 decks442 decks
Bojuka Bog
21%inclusion91 decks442 decks
Urza's Saga
17%inclusion76 decks442 decks
Phyrexian Tower
13%inclusion59 decks442 decks
Castle Ardenvale
12%inclusion51 decks442 decks
Urborg, Tomb of Yawgmoth
11%inclusion47 decks442 decks
Field of the Dead
10%inclusion45 decks442 decks
Fountainport
8.7%inclusion36 decks412 decks
Memorial to Glory
8.1%inclusion36 decks442 decks
Vault of the Archangel
7.5%inclusion33 decks442 decks
Emergence Zone
6.8%inclusion30 decks442 decks
Temple of the False God
6.3%inclusion28 decks442 decks
Minamo, School at Water's Edge
5.7%inclusion25 decks442 decks
Barad-dûr
5.2%inclusion23 decks442 decks
Mana Artifacts
Sol Ring
95%inclusion419 decks442 decks
Arcane Signet
93%inclusion411 decks442 decks
Talisman of Dominance
66%inclusion291 decks442 decks
Talisman of Progress
63%inclusion280 decks442 decks
Talisman of Hierarchy
58%inclusion258 decks442 decks
Thought Vessel
43%inclusion188 decks442 decks
Fellwar Stone
35%inclusion155 decks442 decks
Azorius Signet
26%inclusion116 decks442 decks
Dimir Signet
25%inclusion109 decks442 decks
Orzhov Signet
24%inclusion106 decks442 decks
Mind Stone
18%inclusion78 decks442 decks
Lotus Petal
17%inclusion75 decks442 decks
Commander's Sphere
16%inclusion70 decks442 decks
Mox Opal
16%inclusion69 decks442 decks
Decanter of Endless Water
15%inclusion67 decks442 decks
Basalt Monolith
14%inclusion64 decks442 decks
Mox Diamond
13%inclusion57 decks442 decks
Grim Monolith
8.4%inclusion37 decks442 decks
Chromatic Lantern
7.2%inclusion32 decks442 decks
Mox Amber
7.0%inclusion31 decks442 decks
Everflowing Chalice
6.8%inclusion30 decks442 decks
Lands
Command Tower
94%inclusion415 decks442 decks
Crumbling Necropolis
75%inclusion3 decks4 decks
Mystic Monastery
75%inclusion3 decks4 decks
Nomad Outpost
75%inclusion3 decks4 decks
Exotic Orchard
67%inclusion294 decks442 decks
Hallowed Fountain
57%inclusion251 decks442 decks
Godless Shrine
56%inclusion246 decks442 decks
Watery Grave
54%inclusion238 decks442 decks
Arcane Sanctum
48%inclusion214 decks442 decks
Prairie Stream
45%inclusion201 decks442 decks
Flooded Strand
45%inclusion200 decks442 decks
Polluted Delta
45%inclusion200 decks442 decks
Marsh Flats
45%inclusion197 decks442 decks
Sunken Hollow
44%inclusion196 decks442 decks
Vault of Champions
40%inclusion176 decks442 decks
Sea of Clouds
40%inclusion176 decks442 decks
Morphic Pool
39%inclusion171 decks442 decks
Caves of Koilos
37%inclusion162 decks442 decks
Raffine's Tower
35%inclusion155 decks442 decks
Skycloud Expanse
30%inclusion132 decks442 decks
Adarkar Wastes
30%inclusion132 decks442 decks
Isolated Chapel
30%inclusion131 decks442 decks
Port Town
29%inclusion127 decks442 decks
Path of Ancestry
29%inclusion126 decks442 decks
Glacial Fortress
28%inclusion123 decks442 decks
Darkwater Catacombs
28%inclusion122 decks442 decks
Underground River
27%inclusion119 decks442 decks
Choked Estuary
26%inclusion113 decks442 decks
Underground Sea
25%inclusion110 decks442 decks
Scrubland
24%inclusion108 decks442 decks
Tundra
24%inclusion107 decks442 decks
Drowned Catacomb
24%inclusion107 decks442 decks
City of Brass
24%inclusion105 decks442 decks
Mana Confluence
21%inclusion95 decks442 decks
Evolving Wilds
21%inclusion93 decks442 decks
Deserted Beach
20%inclusion90 decks442 decks
Shipwreck Marsh
20%inclusion90 decks442 decks
Misty Rainforest
20%inclusion89 decks442 decks
Scalding Tarn
20%inclusion88 decks442 decks
Terramorphic Expanse
19%inclusion84 decks442 decks
Verdant Catacombs
19%inclusion83 decks442 decks
Bloodstained Mire
19%inclusion82 decks442 decks
Arid Mesa
18%inclusion80 decks442 decks
Windswept Heath
17%inclusion76 decks442 decks
Gemstone Caverns
16%inclusion72 decks442 decks
Shattered Sanctum
16%inclusion69 decks442 decks
Meticulous Archive
14%inclusion63 decks442 decks
Undercity Sewers
14%inclusion60 decks442 decks
Floodfarm Verge
13%inclusion50 decks387 decks
Contaminated Landscape
13%inclusion55 decks434 decks