Underworld Breach
Altar of Dementia
Cathodion

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield.

   Steps

How does this combo work?
1
Activate Altar of Dementia by sacrificing Cathodion.
2
Cathodion triggers, adding .
3
Resolve the Altar of Dementia ability, causing yourself to mill cards equal to Cathodion's power.
4
Cast Cathodion from your graveyard for its escape cost by paying 3 and exiling three cards from your graveyard.
5
Repeat.

   Results

What do I get from this combo?
Infinite self-mill
Near-infinite death triggers
Near-infinite ETB
Near-infinite LTB
Near-infinite sacrifice triggers
Near-infinite storm count
Rakdos, the Muscle
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Herigast, Erupting Nullkite
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Sorceries
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7%synergy
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-7%synergy
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6%synergy
Unmarked Grave
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4%synergy
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Utility Artifacts
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44%synergy
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26%synergy
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Krark-Clan Ironworks
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Ichor Wellspring
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Altar of the Wretched
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Enchantments
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29%synergy
Exploration
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35%synergy
Sylvan Library
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34%synergy
Rhystic Study
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15%synergy
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15%synergy
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24%synergy
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14%synergy
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14%synergy
Impact Tremors
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2%synergy
Utility Lands
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67%synergy
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31%synergy
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26%synergy
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13%synergy
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12%synergy
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7%synergy
Buried Ruin
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10%synergy
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6%synergy
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12%synergy
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7%synergy
Great Furnace
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3%synergy
Reliquary Tower
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6%synergy
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5%synergy
Mana Artifacts
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14%synergy
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11%synergy
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51%synergy
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69%synergy
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25%synergy
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11%synergy
Talisman of Creativity
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11%synergy
Grim Monolith
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34%synergy
Mox Opal
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27%synergy
Talisman of Conviction
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7%synergy
Fellwar Stone
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10%synergy
Izzet Signet
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7%synergy
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24%synergy
Mox Amber
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12%synergy
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-9%synergy
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7%synergy
Mind Stone
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3%synergy
The Soul Stone
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3%synergy
Chromatic Star
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6%synergy
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5%synergy
Lands
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10%synergy
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83%inclusion76 decks92 decks
59%synergy
Blood Crypt
83%inclusion76 decks92 decks
44%synergy
Luxury Suite
73%inclusion67 decks92 decks
49%synergy
Watery Grave
71%inclusion5 decks7 decks
30%synergy
Battlefield Forge
69%inclusion11 decks16 decks
40%synergy
Bloodstained Mire
65%inclusion78 decks120 decks
54%synergy
Mount Doom
60%inclusion55 decks92 decks
54%synergy
City of Brass
59%inclusion71 decks120 decks
52%synergy
Underground River
57%inclusion4 decks7 decks
34%synergy
Stomping Ground
57%inclusion4 decks7 decks
16%synergy
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57%inclusion51 decks90 decks
46%synergy
Sacred Foundry
56%inclusion9 decks16 decks
19%synergy
Badlands
54%inclusion50 decks92 decks
41%synergy
Steam Vents
54%inclusion7 decks13 decks
15%synergy
Marsh Flats
51%inclusion61 decks120 decks
40%synergy
Arid Mesa
50%inclusion60 decks120 decks
40%synergy
Raucous Theater
50%inclusion46 decks92 decks
40%synergy
Mana Confluence
48%inclusion57 decks120 decks
41%synergy
Polluted Delta
48%inclusion57 decks120 decks
35%synergy
Shivan Reef
46%inclusion6 decks13 decks
17%synergy
Scalding Tarn
44%inclusion53 decks120 decks
33%synergy
Wooded Foothills
44%inclusion53 decks120 decks
33%synergy
Spectator Seating
44%inclusion7 decks16 decks
21%synergy
Karplusan Forest
43%inclusion3 decks7 decks
23%synergy
Morphic Pool
43%inclusion3 decks7 decks
19%synergy
Verdant Catacombs
41%inclusion49 decks120 decks
30%synergy
Gemstone Caverns
40%inclusion48 decks120 decks
35%synergy
Clifftop Retreat
38%inclusion6 decks16 decks
2%synergy
Sunbaked Canyon
31%inclusion5 decks16 decks
27%synergy
Plateau
31%inclusion5 decks16 decks
19%synergy
Cavern of Souls
31%inclusion37 decks120 decks
24%synergy
Thundering Falls
31%inclusion4 decks13 decks
22%synergy
Training Center
31%inclusion4 decks13 decks
6%synergy
Graven Cairns
28%inclusion26 decks92 decks
19%synergy
Exotic Orchard
27%inclusion32 decks120 decks
-10%synergy
Starting Town
25%inclusion21 decks83 decks
23%synergy
Inspiring Vantage
25%inclusion4 decks16 decks
20%synergy
Volcanic Island
23%inclusion3 decks13 decks
9%synergy
Dragonskull Summit
22%inclusion20 decks92 decks
-13%synergy
Needleverge Pathway
19%inclusion3 decks16 decks
11%synergy
Rugged Prairie
19%inclusion3 decks16 decks
4%synergy
Smoldering Marsh
16%inclusion15 decks92 decks
-17%synergy
Spire of Industry
13%inclusion16 decks120 decks
10%synergy
Blackcleave Cliffs
13%inclusion12 decks92 decks
7%synergy
Blightstep Pathway
12%inclusion11 decks92 decks
4%synergy
Lazotep Quarry
11%inclusion13 decks118 decks
10%synergy
Haunted Ridge
11%inclusion10 decks92 decks
-6%synergy
Shadowblood Ridge
10%inclusion9 decks92 decks
-3%synergy
Talon Gates of Madara
9.3%inclusion11 decks118 decks
7%synergy