Scrap Trawler
Myr Retriever
Ashnod's Altar
Umori, the Collector

   Prerequisites

What do I need to start this combo?
Scrap Trawler in your graveyard.
All other permanents on the battlefield (Umori with "Artifact" or "Creature" chosen on the battlefield).

   Steps

How does this combo work?
1
Activate Ashnod's Altar by sacrificing Myr Retriever, adding .
2
When Myr Retriever dies, it triggers, returning Scrap Trawler from your graveyard to your hand.
3
Cast Scrap Trawler by paying its mana cost, which is reduced by Umori.
4
Activate Ashnod's Altar by sacrificing Scrap Trawler, adding .
5
When Scrap Trawler dies, it triggers, returning Myr Retriever from your graveyard to your hand.
6
Cast Myr Retriever by paying its mana cost, which is reduced by Umori.
7
Repeat.

   Results

What do I get from this combo?
Infinite ETB
Infinite LTB
Infinite colorless mana
Infinite death triggers
Infinite sacrifice triggers
Infinite storm count
Rendmaw, Creaking Nest
0.1%inclusion16 decks11.3K decks
Umori, the Collector
0.4%inclusion6 decks1.35K decks
Glissa, the Traitor
0.1%inclusion3 decks2.72K decks
Honest Rutstein
0.2%inclusion2 decks1.11K decks
Henzie "Toolbox" Torre
0.0%inclusion1 decks17.4K decks
Colfenor, the Last Yew
0.1%inclusion1 decks1.13K decks
Ishai, Ojutai Dragonspeaker // Reyhan, Last of the Abzan
0.0%inclusion1 decks2.07K decks
Azlask, the Swelling Scourge
0.0%inclusion1 decks14.4K decks
Atogatog
0.1%inclusion1 decks1.87K decks
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Planeswalkers
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Utility Lands
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39%synergy
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Urza's Saga
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27%synergy
Dryad Arbor
31%inclusion10 decks32 decks
27%synergy
Urborg, Tomb of Yawgmoth
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22%synergy
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Phyrexian Tower
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12%synergy
Tomb Fortress
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Volrath's Stronghold
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6%synergy
Castle Locthwain
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6%synergy
Shifting Woodland
9.4%inclusion3 decks32 decks
3%synergy
Temple of the False God
9.4%inclusion3 decks32 decks
0%synergy
Mana Artifacts
Sol Ring
97%inclusion31 decks32 decks
13%synergy
Arcane Signet
66%inclusion21 decks32 decks
-7%synergy
Talisman of Resilience
47%inclusion15 decks32 decks
34%synergy
Mind Stone
44%inclusion14 decks32 decks
29%synergy
Golgari Signet
41%inclusion13 decks32 decks
31%synergy
Fellwar Stone
34%inclusion11 decks32 decks
14%synergy
The Aetherspark
30%inclusion7 decks23 decks
29%synergy
Thought Vessel
28%inclusion9 decks32 decks
11%synergy
Chromatic Star
22%inclusion7 decks32 decks
21%synergy
Lotus Petal
22%inclusion7 decks32 decks
15%synergy
Commander's Sphere
19%inclusion6 decks32 decks
7%synergy
Blinkmoth Urn
13%inclusion4 decks32 decks
12%synergy
Chromatic Sphere
13%inclusion4 decks32 decks
12%synergy
Springleaf Drum
13%inclusion4 decks32 decks
10%synergy
Hedron Archive
13%inclusion4 decks32 decks
10%synergy
Mox Opal
13%inclusion4 decks32 decks
8%synergy
Thran Dynamo
9.4%inclusion3 decks32 decks
5%synergy
Lands
Mistvault Bridge
100%inclusion3 decks3 decks
96%synergy
Razortide Bridge
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93%synergy
Command Tower
78%inclusion25 decks32 decks
4%synergy
Goldmire Bridge
75%inclusion3 decks4 decks
71%synergy
Overgrown Tomb
66%inclusion21 decks32 decks
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Darkmoss Bridge
63%inclusion20 decks32 decks
59%synergy
Undergrowth Stadium
47%inclusion15 decks32 decks
23%synergy
Llanowar Wastes
38%inclusion12 decks32 decks
11%synergy
Valgavoth's Lair
37%inclusion10 decks27 decks
36%synergy
Scene of the Crime
34%inclusion11 decks32 decks
34%synergy
Verdant Catacombs
34%inclusion11 decks32 decks
23%synergy
Power Depot
31%inclusion10 decks32 decks
30%synergy
Underground Mortuary
31%inclusion10 decks32 decks
19%synergy
Blooming Marsh
28%inclusion9 decks32 decks
23%synergy
Woodland Cemetery
28%inclusion9 decks32 decks
-4%synergy
Bayou
25%inclusion8 decks32 decks
12%synergy
Twilight Mire
22%inclusion7 decks32 decks
8%synergy
Golgari Rot Farm
22%inclusion7 decks32 decks
5%synergy
Exotic Orchard
22%inclusion7 decks32 decks
-15%synergy
Spire of Industry
19%inclusion6 decks32 decks
16%synergy
Tainted Wood
19%inclusion6 decks32 decks
5%synergy
Myriad Landscape
19%inclusion6 decks32 decks
3%synergy
Darkbore Pathway
16%inclusion5 decks32 decks
9%synergy
Deathcap Glade
16%inclusion5 decks32 decks
3%synergy
Temple of Malady
16%inclusion5 decks32 decks
0%synergy
Evolving Wilds
16%inclusion5 decks32 decks
-5%synergy
Viridescent Bog
13%inclusion4 decks32 decks
4%synergy
Wooded Foothills
13%inclusion4 decks32 decks
2%synergy
Necroblossom Snarl
13%inclusion4 decks32 decks
1%synergy
The Mycosynth Gardens
9.4%inclusion3 decks32 decks
8%synergy
Nurturing Peatland
9.4%inclusion3 decks32 decks
5%synergy
Golgari Guildgate
9.4%inclusion3 decks32 decks
4%synergy
Haunted Mire
9.4%inclusion3 decks32 decks
3%synergy
Fabled Passage
9.4%inclusion3 decks32 decks
0%synergy
Marsh Flats
9.4%inclusion3 decks32 decks
-1%synergy
Windswept Heath
9.4%inclusion3 decks32 decks
-2%synergy
Bloodstained Mire
9.4%inclusion3 decks32 decks
-2%synergy
Misty Rainforest
9.4%inclusion3 decks32 decks
-2%synergy
Polluted Delta
9.4%inclusion3 decks32 decks
-3%synergy
Terramorphic Expanse
9.4%inclusion3 decks32 decks
-5%synergy