Unctus, Grand Metatect
The Watcher in the Water
Mothdust Changeling

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield.
It is an opponent's turn.

   Steps

How does this combo work?
1
During an opponent's turn, activate Mothdust Changeling by tapping a blue creature you control except Unctus.
2
The creature triggers, causing you to loot.
3
The Watcher's first ability triggers, creating a 1/1 Tentacle creature token.
4
Resolve the Mothdust Changeling ability.
5
Repeat.

   Results

What do I get from this combo?
Infinite self-discard triggers
Near-infinite ETB
Infinite draw triggers
Infinite looting
Near-infinite tapped creature tokens
Tui and La, Moon and Ocean
1.3%inclusion7 decks535 decks
Aboshan, Cephalid Emperor
0.3%inclusion1 decks359 decks
Korlessa, Scale Singer
0.2%inclusion1 decks552 decks
Nezahal, Primal Tide
0.1%inclusion1 decks1.22K decks
Vnwxt, Verbose Host
0.0%inclusion1 decks6.72K decks
New Cards
Daughter of the Deep
33%inclusion1 decks3 decks
33%synergy
High Synergy Cards
Grand Architect
64%inclusion18 decks28 decks
64%synergy
Chasm Skulker
64%inclusion18 decks28 decks
60%synergy
Ominous Seas
61%inclusion17 decks28 decks
58%synergy
Opposition
57%inclusion16 decks28 decks
57%synergy
Teferi's Ageless Insight
61%inclusion17 decks28 decks
56%synergy
Kelpie Guide
54%inclusion15 decks28 decks
53%synergy
Laboratory Maniac
57%inclusion16 decks28 decks
52%synergy
Homunculus Horde
54%inclusion14 decks26 decks
52%synergy
Psychosis Crawler
54%inclusion15 decks28 decks
51%synergy
Ioreth of the Healing House
46%inclusion13 decks28 decks
45%synergy
Top Cards
Rapid Hybridization
54%inclusion15 decks28 decks
44%synergy
Counterspell
50%inclusion14 decks28 decks
8%synergy
Alandra, Sky Dreamer
43%inclusion12 decks28 decks
42%synergy
Sapphire Medallion
43%inclusion12 decks28 decks
40%synergy
Arcane Denial
43%inclusion12 decks28 decks
23%synergy
Vizier of Tumbling Sands
39%inclusion11 decks28 decks
38%synergy
Jace, Wielder of Mysteries
39%inclusion11 decks28 decks
36%synergy
Dramatic Reversal
39%inclusion11 decks28 decks
35%synergy
Reality Shift
39%inclusion11 decks28 decks
32%synergy
Pongify
39%inclusion11 decks28 decks
28%synergy
Game Changers
Thassa's Oracle
21%inclusion6 decks28 decks
16%synergy
Rhystic Study
21%inclusion6 decks28 decks
-1%synergy
Mystical Tutor
11%inclusion3 decks28 decks
-1%synergy
Fierce Guardianship
11%inclusion3 decks28 decks
-7%synergy
Creatures
Forensic Researcher
36%inclusion10 decks28 decks
35%synergy
Nadir Kraken
36%inclusion10 decks28 decks
34%synergy
Hydroelectric Specimen
36%inclusion10 decks28 decks
31%synergy
Tolarian Kraken
32%inclusion9 decks28 decks
32%synergy
Fatestitcher
32%inclusion9 decks28 decks
32%synergy
Containment Construct
32%inclusion9 decks28 decks
31%synergy
Mischievous Mystic
31%inclusion8 decks26 decks
30%synergy
North Pole Patrol
29%inclusion6 decks21 decks
28%synergy
Silver Myr
29%inclusion8 decks28 decks
26%synergy
Ornithopter of Paradise
29%inclusion8 decks28 decks
24%synergy
Aphetto Alchemist
25%inclusion7 decks28 decks
24%synergy
Emrakul's Messenger
25%inclusion7 decks28 decks
24%synergy
Phyrexian Metamorph
25%inclusion7 decks28 decks
18%synergy
Marvin, Murderous Mimic
22%inclusion6 decks27 decks
21%synergy
Minn, Wily Illusionist
21%inclusion6 decks28 decks
21%synergy
Omen Hawker
21%inclusion6 decks28 decks
21%synergy
Twenty-Toed Toad
21%inclusion6 decks28 decks
19%synergy
Tiger-Seal
19%inclusion4 decks21 decks
19%synergy
Steelswarm Operator
19%inclusion4 decks21 decks
19%synergy
Lyla, Holographic Assistant
19%inclusion4 decks21 decks
18%synergy
Sage of the Falls
18%inclusion5 decks28 decks
18%synergy
Detective of the Month
18%inclusion5 decks28 decks
17%synergy
Merfolk Looter
18%inclusion5 decks28 decks
17%synergy
Arcanis the Omnipotent
18%inclusion5 decks28 decks
17%synergy
Triskaidekaphile
18%inclusion5 decks28 decks
16%synergy
Wonder
18%inclusion5 decks28 decks
14%synergy
Emry, Lurker of the Loch
18%inclusion5 decks28 decks
14%synergy
Hullbreaker Horror
18%inclusion5 decks28 decks
10%synergy
Guidelight Optimizer
16%inclusion4 decks25 decks
16%synergy
Scrounging Skyray
16%inclusion4 decks25 decks
16%synergy
High Fae Trickster
15%inclusion4 decks26 decks
12%synergy
Bonded Fetch
14%inclusion4 decks28 decks
14%synergy
Mechan Navigator
14%inclusion3 decks21 decks
14%synergy
Clever Conjurer
14%inclusion4 decks28 decks
14%synergy
Pili-Pala
14%inclusion4 decks28 decks
14%synergy
Chief Engineer
14%inclusion4 decks28 decks
14%synergy
Chakram Retriever
14%inclusion4 decks28 decks
14%synergy
Gran-Gran
14%inclusion3 decks21 decks
13%synergy
Junk Winder
14%inclusion4 decks28 decks
12%synergy
Mu Yanling, Wind Rider
12%inclusion3 decks25 decks
12%synergy
Tidewater Minion
11%inclusion3 decks28 decks
11%synergy
Drowned Rusalka
11%inclusion3 decks28 decks
11%synergy
Jacob Hauken, Inspector
11%inclusion3 decks28 decks
11%synergy
Horseshoe Crab
11%inclusion3 decks28 decks
11%synergy
Oaken Siren
11%inclusion3 decks28 decks
10%synergy
Scaretiller
11%inclusion3 decks28 decks
10%synergy
Silver Raven
11%inclusion3 decks28 decks
10%synergy
Monstrosity of the Lake
11%inclusion3 decks28 decks
10%synergy
Amoeboid Changeling
11%inclusion3 decks28 decks
10%synergy
Deranged Assistant
11%inclusion3 decks28 decks
10%synergy
Instants
Brainstorm
39%inclusion11 decks28 decks
21%synergy
High Tide
36%inclusion10 decks28 decks
32%synergy
Sink into Stupor
32%inclusion9 decks28 decks
22%synergy
Negate
32%inclusion9 decks28 decks
12%synergy
An Offer You Can't Refuse
29%inclusion8 decks28 decks
3%synergy
Shore Up
25%inclusion7 decks28 decks
23%synergy
Magic Damper
24%inclusion5 decks21 decks
22%synergy
Octopus Form
24%inclusion5 decks21 decks
22%synergy
Muddle the Mixture
21%inclusion6 decks28 decks
17%synergy
Frantic Search
21%inclusion6 decks28 decks
6%synergy
Swan Song
21%inclusion6 decks28 decks
3%synergy
Unwind
18%inclusion5 decks28 decks
15%synergy
Resculpt
18%inclusion5 decks28 decks
14%synergy
Banishing Knack
14%inclusion4 decks28 decks
14%synergy
Meeting of Minds
14%inclusion4 decks28 decks
14%synergy
Retraction Helix
14%inclusion4 decks28 decks
14%synergy
Flow of Knowledge
14%inclusion4 decks28 decks
13%synergy
March of Swirling Mist
14%inclusion4 decks28 decks
12%synergy
Whir of Invention
14%inclusion4 decks28 decks
12%synergy
Three Steps Ahead
14%inclusion4 decks28 decks
11%synergy
Dig Through Time
14%inclusion4 decks28 decks
10%synergy
Aetherize
14%inclusion4 decks28 decks
7%synergy
Twiddle
11%inclusion3 decks28 decks
10%synergy
Circular Logic
11%inclusion3 decks28 decks
10%synergy
Abjure
11%inclusion3 decks28 decks
10%synergy
Long-Term Plans
11%inclusion3 decks28 decks
10%synergy
Cerulean Wisps
11%inclusion3 decks28 decks
10%synergy
Turnabout
11%inclusion3 decks28 decks
10%synergy
Archmage's Charm
11%inclusion3 decks28 decks
9%synergy
Desynchronization
11%inclusion3 decks28 decks
9%synergy
Flare of Denial
11%inclusion3 decks28 decks
8%synergy
Dispel
11%inclusion3 decks28 decks
7%synergy
Snap
11%inclusion3 decks28 decks
3%synergy
Opt
11%inclusion3 decks28 decks
2%synergy
Sorceries
Hidden Strings
14%inclusion4 decks28 decks
14%synergy
Artful Dodge
14%inclusion4 decks28 decks
13%synergy
Spirit Water Revival
14%inclusion3 decks21 decks
13%synergy
Fabricate
14%inclusion4 decks28 decks
9%synergy
Windfall
14%inclusion4 decks28 decks
3%synergy
Enter the Enigma
11%inclusion3 decks27 decks
9%synergy
Energy Tap
11%inclusion3 decks28 decks
10%synergy
Wash Out
11%inclusion3 decks28 decks
10%synergy
Spectral Deluge
11%inclusion3 decks28 decks
10%synergy
Whelming Wave
11%inclusion3 decks28 decks
9%synergy
Wave Goodbye
11%inclusion3 decks28 decks
9%synergy
Treasure Cruise
11%inclusion3 decks28 decks
6%synergy
Ponder
11%inclusion3 decks28 decks
-1%synergy
Utility Artifacts
Thopter Fabricator
32%inclusion8 decks25 decks
31%synergy
Monument to Endurance
28%inclusion7 decks25 decks
26%synergy
Swiftfoot Boots
25%inclusion7 decks28 decks
-2%synergy
Synthesizer Labship
24%inclusion5 decks21 decks
24%synergy
Smuggler's Copter
21%inclusion6 decks28 decks
21%synergy
Fishing Pole
19%inclusion5 decks26 decks
19%synergy
The Lunar Whale
19%inclusion4 decks21 decks
19%synergy
The Indomitable
18%inclusion5 decks28 decks
16%synergy
Imposter Mech
18%inclusion5 decks28 decks
16%synergy
Lightning Greaves
18%inclusion5 decks28 decks
-7%synergy
Silent Submersible
14%inclusion4 decks28 decks
14%synergy
Kefnet's Monument
14%inclusion4 decks28 decks
14%synergy
Subterranean Schooner
14%inclusion4 decks28 decks
14%synergy
Uthros Research Craft
14%inclusion3 decks21 decks
12%synergy
Sensei's Divining Top
14%inclusion4 decks28 decks
10%synergy
Ashnod's Altar
14%inclusion4 decks28 decks
8%synergy
Dermotaxi
11%inclusion3 decks28 decks
11%synergy
Mindlink Mech
11%inclusion3 decks28 decks
11%synergy
Symmetry Matrix
11%inclusion3 decks28 decks
11%synergy
Currency Converter
11%inclusion3 decks28 decks
10%synergy
Library of Leng
11%inclusion3 decks28 decks
10%synergy
Encroaching Mycosynth
11%inclusion3 decks28 decks
10%synergy
Clock of Omens
11%inclusion3 decks28 decks
10%synergy
Sting, the Glinting Dagger
11%inclusion3 decks28 decks
10%synergy
Alhammarret's Archive
11%inclusion3 decks28 decks
9%synergy
Thousand-Year Elixir
11%inclusion3 decks28 decks
9%synergy
Isochron Scepter
11%inclusion3 decks28 decks
9%synergy
Phyrexian Altar
11%inclusion3 decks28 decks
7%synergy
Enchantments
Unstoppable Plan
32%inclusion8 decks25 decks
30%synergy
Second Wind
29%inclusion8 decks28 decks
29%synergy
Pemmin's Aura
29%inclusion8 decks28 decks
27%synergy
Retreat to Coralhelm
29%inclusion8 decks28 decks
27%synergy
Intruder Alarm
25%inclusion7 decks28 decks
23%synergy
Wizard Class
25%inclusion7 decks28 decks
21%synergy
Propaganda
25%inclusion7 decks28 decks
11%synergy
Freed from the Real
21%inclusion6 decks28 decks
19%synergy
Mystic Remora
21%inclusion6 decks28 decks
6%synergy
Aura of Dominion
18%inclusion5 decks28 decks
18%synergy
Verity Circle
18%inclusion5 decks28 decks
17%synergy
Proft's Eidetic Memory
18%inclusion5 decks28 decks
16%synergy
Imprisoned in the Moon
18%inclusion5 decks28 decks
14%synergy
Kindred Discovery
18%inclusion5 decks28 decks
11%synergy
Crab Umbra
14%inclusion4 decks28 decks
14%synergy
Drake Haven
14%inclusion4 decks28 decks
14%synergy
Lost in the Maze
11%inclusion3 decks28 decks
10%synergy
Psychic Corrosion
11%inclusion3 decks28 decks
9%synergy
Battles
Invasion of Segovia
29%inclusion8 decks28 decks
28%synergy
Planeswalkers
Teferi, Temporal Pilgrim
25%inclusion7 decks28 decks
24%synergy
Teferi, Master of Time
14%inclusion4 decks28 decks
13%synergy
Artifacts
Sol Ring
71%inclusion20 decks28 decks
-12%synergy
Springleaf Drum
61%inclusion17 decks28 decks
58%synergy
Arcane Signet
61%inclusion17 decks28 decks
-11%synergy
Thought Vessel
39%inclusion11 decks28 decks
22%synergy
Paradise Mantle
32%inclusion9 decks28 decks
31%synergy
Thopter Fabricator
32%inclusion8 decks25 decks
31%synergy
Moonsnare Prototype
29%inclusion8 decks28 decks
28%synergy
Monument to Endurance
28%inclusion7 decks25 decks
26%synergy
Mind Stone
25%inclusion7 decks28 decks
11%synergy
Swiftfoot Boots
25%inclusion7 decks28 decks
-2%synergy
Synthesizer Labship
24%inclusion5 decks21 decks
24%synergy
The Eternity Elevator
24%inclusion5 decks21 decks
22%synergy
Smuggler's Copter
21%inclusion6 decks28 decks
21%synergy
Fishing Pole
19%inclusion5 decks26 decks
19%synergy
The Lunar Whale
19%inclusion4 decks21 decks
19%synergy
Cargo Ship
19%inclusion4 decks21 decks
19%synergy
The Indomitable
18%inclusion5 decks28 decks
16%synergy
Imposter Mech
18%inclusion5 decks28 decks
16%synergy
Relic of Legends
18%inclusion5 decks28 decks
15%synergy
Decanter of Endless Water
18%inclusion5 decks28 decks
14%synergy
Lightning Greaves
18%inclusion5 decks28 decks
-7%synergy
Silent Submersible
14%inclusion4 decks28 decks
14%synergy
Kefnet's Monument
14%inclusion4 decks28 decks
14%synergy
Subterranean Schooner
14%inclusion4 decks28 decks
14%synergy
Uthros Research Craft
14%inclusion3 decks21 decks
12%synergy
Bender's Waterskin
14%inclusion3 decks21 decks
11%synergy
Sensei's Divining Top
14%inclusion4 decks28 decks
10%synergy
Ashnod's Altar
14%inclusion4 decks28 decks
8%synergy
Dermotaxi
11%inclusion3 decks28 decks
11%synergy
Mindlink Mech
11%inclusion3 decks28 decks
11%synergy
Symmetry Matrix
11%inclusion3 decks28 decks
11%synergy
Honor-Worn Shaku
11%inclusion3 decks28 decks
10%synergy
Currency Converter
11%inclusion3 decks28 decks
10%synergy
Library of Leng
11%inclusion3 decks28 decks
10%synergy
Encroaching Mycosynth
11%inclusion3 decks28 decks
10%synergy
Clock of Omens
11%inclusion3 decks28 decks
10%synergy
Sting, the Glinting Dagger
11%inclusion3 decks28 decks
10%synergy
Patriar's Seal
11%inclusion3 decks28 decks
9%synergy
Alhammarret's Archive
11%inclusion3 decks28 decks
9%synergy
Thousand-Year Elixir
11%inclusion3 decks28 decks
9%synergy
Isochron Scepter
11%inclusion3 decks28 decks
9%synergy
Phyrexian Altar
11%inclusion3 decks28 decks
7%synergy
Midnight Clock
11%inclusion3 decks28 decks
6%synergy
Commander's Sphere
11%inclusion3 decks28 decks
-0%synergy
Utility Lands
Mystic Sanctuary
50%inclusion14 decks28 decks
40%synergy
Reliquary Tower
50%inclusion14 decks28 decks
20%synergy
Cephalid Coliseum
29%inclusion8 decks28 decks
25%synergy
Agna Qel'a
25%inclusion5 decks20 decks
23%synergy
Rogue's Passage
25%inclusion7 decks28 decks
5%synergy
Uthros, Titanic Godcore
24%inclusion5 decks21 decks
20%synergy
Lonely Sandbar
21%inclusion6 decks28 decks
19%synergy
Archway of Innovation
21%inclusion6 decks28 decks
18%synergy
Otawara, Soaring City
21%inclusion6 decks28 decks
5%synergy
Coral Atoll
18%inclusion5 decks28 decks
17%synergy
Rivendell
18%inclusion5 decks28 decks
15%synergy
Castle Vantress
18%inclusion5 decks28 decks
15%synergy
Seat of the Synod
18%inclusion5 decks28 decks
11%synergy
Mistrise Village
17%inclusion4 decks24 decks
9%synergy
Minamo, School at Water's Edge
14%inclusion4 decks28 decks
10%synergy
Academy Ruins
14%inclusion4 decks28 decks
9%synergy
War Room
14%inclusion4 decks28 decks
9%synergy
Desert of the Mindful
11%inclusion3 decks28 decks
10%synergy
Emergence Zone
11%inclusion3 decks28 decks
8%synergy
Buried Ruin
11%inclusion3 decks28 decks
6%synergy
Urza's Saga
11%inclusion3 decks28 decks
4%synergy
Mana Artifacts
Sol Ring
71%inclusion20 decks28 decks
-12%synergy
Springleaf Drum
61%inclusion17 decks28 decks
58%synergy
Arcane Signet
61%inclusion17 decks28 decks
-11%synergy
Thought Vessel
39%inclusion11 decks28 decks
22%synergy
Paradise Mantle
32%inclusion9 decks28 decks
31%synergy
Moonsnare Prototype
29%inclusion8 decks28 decks
28%synergy
Mind Stone
25%inclusion7 decks28 decks
11%synergy
The Eternity Elevator
24%inclusion5 decks21 decks
22%synergy
Cargo Ship
19%inclusion4 decks21 decks
19%synergy
Relic of Legends
18%inclusion5 decks28 decks
15%synergy
Decanter of Endless Water
18%inclusion5 decks28 decks
14%synergy
Bender's Waterskin
14%inclusion3 decks21 decks
11%synergy
Honor-Worn Shaku
11%inclusion3 decks28 decks
10%synergy
Patriar's Seal
11%inclusion3 decks28 decks
9%synergy
Midnight Clock
11%inclusion3 decks28 decks
6%synergy
Commander's Sphere
11%inclusion3 decks28 decks
-0%synergy
Lands
Holdout Settlement
39%inclusion11 decks28 decks
39%synergy
Survivors' Encampment
36%inclusion10 decks28 decks
35%synergy
Myriad Landscape
32%inclusion9 decks28 decks
17%synergy
Scene of the Crime
14%inclusion4 decks28 decks
14%synergy
The Mycosynth Gardens
14%inclusion4 decks28 decks
13%synergy
Flooded Strand
11%inclusion3 decks28 decks
-1%synergy
Polluted Delta
11%inclusion3 decks28 decks
-1%synergy