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
1.1%inclusion62 decks5.77K decks
Garna, the Bloodflame
3.3%inclusion8 decks239 decks
Gerrard, Weatherlight Hero
0.6%inclusion3 decks493 decks
Herigast, Erupting Nullkite
0.1%inclusion3 decks4.65K decks
Koll, the Forgemaster
0.3%inclusion3 decks1.15K decks
Birgi, God of Storytelling
0.1%inclusion2 decks1.42K decks
Dargo, the Shipwrecker // Silas Renn, Seeker Adept
0.3%inclusion2 decks587 decks
Dargo, the Shipwrecker // Tevesh Szat, Doom of Fools
0.4%inclusion2 decks467 decks
Flubs, the Fool
0.0%inclusion1 decks21.1K decks
Deadpool, Trading Card
0.0%inclusion1 decks14K decks
The Locust God
0.0%inclusion1 decks6.38K decks
Kefka, Court Mage
0.0%inclusion1 decks21.5K decks
Meria, Scholar of Antiquity
0.0%inclusion1 decks3.53K decks
Zinnia, Valley's Voice
0.0%inclusion1 decks16.3K decks
Arbaaz Mir
0.1%inclusion1 decks1.74K decks
Dargo, the Shipwrecker // Tymna the Weaver
0.1%inclusion1 decks1.85K decks
Wolverine, Best There Is
0.0%inclusion1 decks10.1K decks
The Lord of Pain
0.0%inclusion1 decks5.87K decks
New Cards
Hexing Squelcher
59%inclusion10 decks17 decks
50%synergy
Eclipsed Boggart
7.1%inclusion1 decks14 decks
6%synergy
Moonshadow
7.1%inclusion1 decks14 decks
6%synergy
Twilight Diviner
7.1%inclusion1 decks14 decks
5%synergy
Scuzzback Scrounger
6.7%inclusion1 decks15 decks
5%synergy
High Synergy Cards
Culling the Weak
83%inclusion73 decks88 decks
79%synergy
Priest of Gix
77%inclusion68 decks88 decks
77%synergy
Burnt Offering
76%inclusion67 decks88 decks
74%synergy
Sacrifice
75%inclusion66 decks88 decks
74%synergy
Warren Soultrader
78%inclusion69 decks88 decks
73%synergy
Shriekmaw
75%inclusion66 decks88 decks
73%synergy
Cabal Ritual
76%inclusion67 decks88 decks
71%synergy
Poxwalkers
69%inclusion61 decks88 decks
69%synergy
Viscera Seer
76%inclusion67 decks88 decks
68%synergy
Ashnod's Altar
74%inclusion85 decks115 decks
68%synergy
Top Cards
Dark Ritual
88%inclusion77 decks88 decks
63%synergy
Swords to Plowshares
81%inclusion13 decks16 decks
20%synergy
Reanimate
78%inclusion69 decks88 decks
59%synergy
Diabolic Intent
74%inclusion65 decks88 decks
66%synergy
Phyrexian Altar
69%inclusion79 decks115 decks
65%synergy
Entomb
68%inclusion60 decks88 decks
61%synergy
Grief
67%inclusion59 decks88 decks
67%synergy
Forsaken Miner
67%inclusion59 decks88 decks
66%synergy
Brain Freeze
67%inclusion8 decks12 decks
63%synergy
Greedy Freebooter
65%inclusion57 decks88 decks
63%synergy
Game Changers
Demonic Tutor
70%inclusion62 decks88 decks
51%synergy
Vampiric Tutor
68%inclusion60 decks88 decks
53%synergy
Ancient Tomb
60%inclusion69 decks115 decks
51%synergy
Mana Vault
59%inclusion68 decks115 decks
53%synergy
Gamble
59%inclusion68 decks115 decks
50%synergy
Thassa's Oracle
58%inclusion7 decks12 decks
52%synergy
Chrome Mox
57%inclusion65 decks115 decks
51%synergy
Orcish Bowmasters
49%inclusion43 decks88 decks
40%synergy
Lion's Eye Diamond
49%inclusion56 decks115 decks
47%synergy
Necropotence
43%inclusion38 decks88 decks
38%synergy
Creatures
Ignoble Hierarch
75%inclusion3 decks4 decks
50%synergy
Golgari Thug
64%inclusion56 decks88 decks
63%synergy
Blood Pet
63%inclusion55 decks88 decks
61%synergy
Priest of Urabrask
61%inclusion70 decks115 decks
60%synergy
Reckless Barbarian
61%inclusion70 decks115 decks
60%synergy
K'rrik, Son of Yawgmoth
60%inclusion53 decks88 decks
58%synergy
Lotho, Corrupt Shirriff
60%inclusion3 decks5 decks
47%synergy
Impulsive Pilferer
57%inclusion66 decks115 decks
55%synergy
Elvish Spirit Guide
57%inclusion4 decks7 decks
53%synergy
Birds of Paradise
57%inclusion4 decks7 decks
30%synergy
Ingot Chewer
57%inclusion65 decks115 decks
56%synergy
Grand Abolisher
56%inclusion9 decks16 decks
47%synergy
Shambling Ghast
56%inclusion49 decks88 decks
55%synergy
Umbral Collar Zealot
55%inclusion30 decks55 decks
52%synergy
Fury
54%inclusion62 decks115 decks
53%synergy
Simian Spirit Guide
52%inclusion60 decks115 decks
47%synergy
Esper Sentinel
50%inclusion8 decks16 decks
31%synergy
Ragavan, Nimble Pilferer
50%inclusion57 decks115 decks
42%synergy
Boggart Trawler
49%inclusion43 decks88 decks
45%synergy
Birgi, God of Storytelling
49%inclusion56 decks115 decks
43%synergy
Dargo, the Shipwrecker
48%inclusion55 decks115 decks
48%synergy
Mindslicer
47%inclusion41 decks88 decks
46%synergy
Pinnacle Monk
46%inclusion53 decks114 decks
42%synergy
Dualcaster Mage
46%inclusion53 decks115 decks
42%synergy
Timeline Culler
45%inclusion25 decks56 decks
44%synergy
Sephiroth, Fabled SOLDIER
44%inclusion32 decks72 decks
42%synergy
Blood Artist
44%inclusion39 decks88 decks
33%synergy
Bloom Tender
43%inclusion3 decks7 decks
35%synergy
Eternal Witness
43%inclusion3 decks7 decks
26%synergy
Laboratory Maniac
42%inclusion5 decks12 decks
37%synergy
Pitiless Plunderer
41%inclusion36 decks88 decks
32%synergy
Party Thrasher
40%inclusion46 decks114 decks
39%synergy
Flamekin Harbinger
38%inclusion44 decks115 decks
38%synergy
Recruiter of the Guard
38%inclusion6 decks16 decks
35%synergy
Drannith Magistrate
38%inclusion6 decks16 decks
33%synergy
Archivist of Oghma
38%inclusion6 decks16 decks
33%synergy
Deadpool, Trading Card
33%inclusion25 decks76 decks
31%synergy
Skittering Precursor
32%inclusion37 decks114 decks
32%synergy
Oswald Fiddlebender
31%inclusion5 decks16 decks
30%synergy
Ranger-Captain of Eos
31%inclusion5 decks16 decks
27%synergy
Mayhem Devil
31%inclusion27 decks88 decks
21%synergy
Charming Scoundrel
30%inclusion34 decks115 decks
29%synergy
Atsushi, the Blazing Sky
26%inclusion30 decks115 decks
24%synergy
Loyal Retainers
25%inclusion4 decks16 decks
25%synergy
Teshar, Ancestor's Apostle
25%inclusion4 decks16 decks
23%synergy
Karmic Guide
25%inclusion4 decks16 decks
22%synergy
Emry, Lurker of the Loch
25%inclusion3 decks12 decks
21%synergy
Carrion Feeder
25%inclusion22 decks88 decks
21%synergy
Skirk Prospector
24%inclusion28 decks115 decks
22%synergy
Master of Dark Rites
24%inclusion21 decks88 decks
23%synergy
Instants
Assassin's Trophy
75%inclusion3 decks4 decks
44%synergy
Red Elemental Blast
64%inclusion74 decks115 decks
58%synergy
Pyroblast
63%inclusion72 decks115 decks
57%synergy
Path to Exile
63%inclusion10 decks16 decks
15%synergy
Saw in Half
61%inclusion54 decks88 decks
57%synergy
Swan Song
58%inclusion7 decks12 decks
41%synergy
An Offer You Can't Refuse
58%inclusion7 decks12 decks
34%synergy
Deflecting Swat
58%inclusion67 decks115 decks
41%synergy
Flare of Duplication
56%inclusion64 decks114 decks
53%synergy
Deadly Rollick
52%inclusion46 decks88 decks
38%synergy
Pact of Negation
50%inclusion6 decks12 decks
43%synergy
Mystical Tutor
50%inclusion6 decks12 decks
38%synergy
Songs of the Damned
47%inclusion41 decks88 decks
46%synergy
Silence
44%inclusion7 decks16 decks
37%synergy
Enlightened Tutor
44%inclusion7 decks16 decks
29%synergy
Crop Rotation
43%inclusion3 decks7 decks
33%synergy
Worldly Tutor
43%inclusion3 decks7 decks
31%synergy
Frantic Search
42%inclusion5 decks12 decks
27%synergy
Counterspell
42%inclusion5 decks12 decks
0%synergy
Spell Pierce
33%inclusion4 decks12 decks
30%synergy
Borne Upon a Wind
33%inclusion4 decks12 decks
29%synergy
Flusterstorm
33%inclusion4 decks12 decks
26%synergy
Force of Negation
33%inclusion4 decks12 decks
25%synergy
Fierce Guardianship
33%inclusion4 decks12 decks
16%synergy
Mindbreak Trap
25%inclusion3 decks12 decks
20%synergy
Mental Misstep
25%inclusion3 decks12 decks
19%synergy
Snap
25%inclusion3 decks12 decks
17%synergy
Force of Will
25%inclusion3 decks12 decks
15%synergy
Cyclonic Rift
25%inclusion3 decks12 decks
3%synergy
Flare of Malice
24%inclusion21 decks88 decks
21%synergy
Untimely Malfunction
22%inclusion24 decks108 decks
14%synergy
Chaos Warp
20%inclusion23 decks115 decks
-10%synergy
Second Sunrise
19%inclusion3 decks16 decks
18%synergy
Wear // Tear
19%inclusion3 decks16 decks
12%synergy
Teferi's Protection
19%inclusion3 decks16 decks
2%synergy
Tibalt's Trickery
17%inclusion19 decks115 decks
12%synergy
The Last Agni Kai
14%inclusion5 decks35 decks
11%synergy
Withering Torment
14%inclusion12 decks86 decks
6%synergy
Deadly Dispute
14%inclusion12 decks88 decks
1%synergy
Lightning Bolt
13%inclusion15 decks115 decks
2%synergy
Final Fortune
12%inclusion14 decks115 decks
10%synergy
Imp's Mischief
11%inclusion10 decks88 decks
8%synergy
Desperate Ritual
11%inclusion13 decks115 decks
9%synergy
Pyretic Ritual
11%inclusion13 decks115 decks
8%synergy
Seething Song
10%inclusion12 decks115 decks
4%synergy
Abrade
10%inclusion12 decks115 decks
-1%synergy
Redirect Lightning
9.4%inclusion5 decks53 decks
3%synergy
Fell the Profane
8.0%inclusion7 decks88 decks
-1%synergy
Bolt Bend
7.8%inclusion9 decks115 decks
3%synergy
Tainted Pact
6.8%inclusion6 decks88 decks
3%synergy
Sorceries
Infernal Plunge
59%inclusion68 decks115 decks
58%synergy
Sevinne's Reclamation
56%inclusion9 decks16 decks
49%synergy
Rite of Flame
56%inclusion64 decks115 decks
52%synergy
Jeska's Will
43%inclusion50 decks115 decks
28%synergy
Eldritch Evolution
43%inclusion3 decks7 decks
39%synergy
Imperial Seal
42%inclusion37 decks88 decks
37%synergy
Molten Duplication
32%inclusion37 decks115 decks
30%synergy
Windfall
25%inclusion3 decks12 decks
13%synergy
Wheel of Fortune
23%inclusion26 decks115 decks
18%synergy
Grim Tutor
22%inclusion19 decks88 decks
18%synergy
Faithless Looting
21%inclusion24 decks115 decks
5%synergy
Cabal Therapy
20%inclusion18 decks88 decks
20%synergy
Buried Alive
20%inclusion18 decks88 decks
14%synergy
Open the Armory
19%inclusion3 decks16 decks
14%synergy
Blasphemous Act
15%inclusion17 decks115 decks
-18%synergy
Twinflame
12%inclusion14 decks115 decks
10%synergy
Lively Dirge
10%inclusion9 decks88 decks
8%synergy
Praetor's Grasp
9.1%inclusion8 decks88 decks
7%synergy
Living Death
9.1%inclusion8 decks88 decks
4%synergy
Victimize
9.1%inclusion8 decks88 decks
-3%synergy
Feed the Swarm
9.1%inclusion8 decks88 decks
-7%synergy
Burning Inquiry
8.7%inclusion10 decks115 decks
8%synergy
Grapeshot
8.7%inclusion10 decks115 decks
5%synergy
Vandalblast
8.7%inclusion10 decks115 decks
-7%synergy
Agadeem's Awakening
8.0%inclusion7 decks88 decks
5%synergy
Beseech the Mirror
8.0%inclusion7 decks88 decks
5%synergy
Toxic Deluge
8.0%inclusion7 decks88 decks
-10%synergy
Reckless Handling
7.8%inclusion9 decks115 decks
7%synergy
Unmarked Grave
6.8%inclusion6 decks88 decks
5%synergy
Wheel of Misfortune
6.1%inclusion7 decks115 decks
3%synergy
Demonic Counsel
5.8%inclusion5 decks86 decks
4%synergy
Shatterskull Smashing
5.2%inclusion6 decks115 decks
3%synergy
Utility Artifacts
Wishclaw Talisman
51%inclusion45 decks88 decks
46%synergy
Jet Medallion
29%inclusion33 decks115 decks
25%synergy
The One Ring
23%inclusion26 decks115 decks
14%synergy
Grinding Station
22%inclusion25 decks115 decks
21%synergy
Skullclamp
18%inclusion21 decks115 decks
7%synergy
Sensei's Divining Top
14%inclusion16 decks115 decks
9%synergy
Defense Grid
12%inclusion14 decks115 decks
11%synergy
Lightning Greaves
11%inclusion13 decks115 decks
-13%synergy
Vexing Bauble
8.8%inclusion10 decks114 decks
8%synergy
Mystic Forge
8.7%inclusion10 decks115 decks
6%synergy
Aetherflux Reservoir
8.7%inclusion10 decks115 decks
5%synergy
Bolas's Citadel
8.0%inclusion7 decks88 decks
0%synergy
Semblance Anvil
7.8%inclusion9 decks115 decks
7%synergy
Moonsilver Key
7.8%inclusion9 decks115 decks
7%synergy
Ruby Medallion
7.8%inclusion9 decks115 decks
4%synergy
Krark-Clan Ironworks
7.0%inclusion8 decks115 decks
6%synergy
Ichor Wellspring
7.0%inclusion8 decks115 decks
5%synergy
Swiftfoot Boots
7.0%inclusion8 decks115 decks
-20%synergy
Nim Deathmantle
6.1%inclusion7 decks115 decks
6%synergy
Hazoret's Monument
6.1%inclusion7 decks115 decks
5%synergy
Altar of the Wretched
5.7%inclusion5 decks88 decks
5%synergy
Blasting Station
5.2%inclusion6 decks115 decks
5%synergy
Prized Statue
5.2%inclusion6 decks115 decks
5%synergy
Altar of the Brood
5.2%inclusion6 decks115 decks
4%synergy
Mishra's Bauble
5.2%inclusion6 decks115 decks
4%synergy
Enchantments
Chthonian Nightmare
65%inclusion57 decks88 decks
63%synergy
Smothering Tithe
50%inclusion8 decks16 decks
29%synergy
Exploration
43%inclusion3 decks7 decks
35%synergy
Sylvan Library
43%inclusion3 decks7 decks
34%synergy
Rhystic Study
42%inclusion5 decks12 decks
18%synergy
Mystic Remora
33%inclusion4 decks12 decks
17%synergy
Goblin Bombardment
31%inclusion36 decks115 decks
26%synergy
Animate Dead
23%inclusion20 decks88 decks
14%synergy
Impact Tremors
14%inclusion16 decks115 decks
4%synergy
Carnival of Souls
13%inclusion11 decks88 decks
12%synergy
Blood Moon
7.8%inclusion9 decks115 decks
5%synergy
Dance of the Dead
6.8%inclusion6 decks88 decks
5%synergy
Sneak Attack
6.1%inclusion7 decks115 decks
4%synergy
Into the Pit
5.8%inclusion5 decks86 decks
5%synergy
Tortured Existence
5.7%inclusion5 decks88 decks
4%synergy
Necromancy
5.7%inclusion5 decks88 decks
3%synergy
Utility Lands
Phyrexian Tower
74%inclusion65 decks88 decks
65%synergy
Shifting Woodland
57%inclusion4 decks7 decks
50%synergy
Crystal Vein
33%inclusion38 decks115 decks
32%synergy
Emergence Zone
28%inclusion32 decks115 decks
25%synergy
Urza's Saga
21%inclusion24 decks115 decks
14%synergy
Ancient Den
19%inclusion3 decks16 decks
13%synergy
Eiganjo, Seat of the Empire
19%inclusion3 decks16 decks
12%synergy
Buried Ruin
15%inclusion17 decks115 decks
10%synergy
Takenuma, Abandoned Mire
15%inclusion13 decks88 decks
6%synergy
Urborg, Tomb of Yawgmoth
14%inclusion16 decks115 decks
5%synergy
Bojuka Bog
13%inclusion11 decks88 decks
-17%synergy
City of Traitors
11%inclusion13 decks115 decks
10%synergy
Vault of Whispers
10%inclusion9 decks88 decks
6%synergy
High Market
8.7%inclusion10 decks115 decks
6%synergy
Inventors' Fair
8.7%inclusion10 decks115 decks
5%synergy
Reliquary Tower
8.7%inclusion10 decks115 decks
-21%synergy
Spymaster's Vault
8.0%inclusion7 decks88 decks
5%synergy
Great Furnace
7.8%inclusion9 decks115 decks
2%synergy
Mana Artifacts
Sol Ring
98%inclusion113 decks115 decks
15%synergy
Arcane Signet
83%inclusion96 decks115 decks
11%synergy
Talisman of Indulgence
78%inclusion69 decks88 decks
51%synergy
Lotus Petal
75%inclusion86 decks115 decks
68%synergy
Boros Signet
44%inclusion7 decks16 decks
25%synergy
Talisman of Dominance
43%inclusion3 decks7 decks
10%synergy
Talisman of Creativity
42%inclusion5 decks12 decks
14%synergy
Grim Monolith
35%inclusion40 decks115 decks
33%synergy
Mox Opal
31%inclusion36 decks115 decks
27%synergy
Talisman of Conviction
31%inclusion5 decks16 decks
7%synergy
Fellwar Stone
30%inclusion34 decks115 decks
9%synergy
Mox Diamond
28%inclusion32 decks115 decks
24%synergy
Izzet Signet
25%inclusion3 decks12 decks
1%synergy
Mox Amber
17%inclusion19 decks115 decks
12%synergy
Rakdos Signet
16%inclusion14 decks88 decks
-9%synergy
Springleaf Drum
10%inclusion11 decks115 decks
7%synergy
Mind Stone
10%inclusion11 decks115 decks
-5%synergy
Cursed Mirror
8.7%inclusion10 decks115 decks
3%synergy
The Soul Stone
7.7%inclusion4 decks52 decks
4%synergy
Chromatic Star
7.0%inclusion8 decks115 decks
6%synergy
Mana Crypt
7.0%inclusion8 decks115 decks
5%synergy
Paradise Mantle
5.2%inclusion6 decks115 decks
4%synergy
Basalt Monolith
5.2%inclusion6 decks115 decks
3%synergy
Lands
Command Tower
83%inclusion96 decks115 decks
9%synergy
Sulfurous Springs
82%inclusion72 decks88 decks
58%synergy
Blood Crypt
82%inclusion72 decks88 decks
44%synergy
Luxury Suite
72%inclusion63 decks88 decks
48%synergy
Watery Grave
71%inclusion5 decks7 decks
30%synergy
Battlefield Forge
69%inclusion11 decks16 decks
40%synergy
Bloodstained Mire
64%inclusion74 decks115 decks
53%synergy
Steam Vents
58%inclusion7 decks12 decks
20%synergy
City of Brass
58%inclusion67 decks115 decks
51%synergy
Mount Doom
58%inclusion51 decks88 decks
52%synergy
Underground River
57%inclusion4 decks7 decks
35%synergy
Stomping Ground
57%inclusion4 decks7 decks
16%synergy
Sacred Foundry
56%inclusion9 decks16 decks
20%synergy
Blazemire Verge
56%inclusion48 decks86 decks
45%synergy
Badlands
52%inclusion46 decks88 decks
39%synergy
Raucous Theater
50%inclusion44 decks88 decks
40%synergy
Shivan Reef
50%inclusion6 decks12 decks
21%synergy
Arid Mesa
50%inclusion57 decks115 decks
39%synergy
Marsh Flats
50%inclusion57 decks115 decks
39%synergy
Mana Confluence
46%inclusion53 decks115 decks
39%synergy
Scalding Tarn
46%inclusion53 decks115 decks
35%synergy
Polluted Delta
46%inclusion53 decks115 decks
34%synergy
Wooded Foothills
44%inclusion51 decks115 decks
34%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
39%inclusion45 decks115 decks
28%synergy
Gemstone Caverns
38%inclusion44 decks115 decks
33%synergy
Clifftop Retreat
38%inclusion6 decks16 decks
2%synergy
Thundering Falls
33%inclusion4 decks12 decks
24%synergy
Training Center
33%inclusion4 decks12 decks
9%synergy
Cavern of Souls
32%inclusion37 decks115 decks
25%synergy
Sunbaked Canyon
31%inclusion5 decks16 decks
27%synergy
Plateau
31%inclusion5 decks16 decks
19%synergy
Graven Cairns
28%inclusion25 decks88 decks
19%synergy
Exotic Orchard
26%inclusion30 decks115 decks
-10%synergy
Inspiring Vantage
25%inclusion4 decks16 decks
20%synergy
Volcanic Island
25%inclusion3 decks12 decks
11%synergy
Starting Town
24%inclusion19 decks78 decks
22%synergy
Dragonskull Summit
24%inclusion21 decks88 decks
-11%synergy
Needleverge Pathway
19%inclusion3 decks16 decks
11%synergy
Rugged Prairie
19%inclusion3 decks16 decks
4%synergy
Smoldering Marsh
17%inclusion15 decks88 decks
-17%synergy
Spire of Industry
14%inclusion16 decks115 decks
11%synergy
Blackcleave Cliffs
14%inclusion12 decks88 decks
7%synergy
Blightstep Pathway
11%inclusion10 decks88 decks
4%synergy
Lazotep Quarry
11%inclusion12 decks113 decks
10%synergy
Tainted Peak
10%inclusion9 decks88 decks
-1%synergy
Shadowblood Ridge
10%inclusion9 decks88 decks
-2%synergy
Haunted Ridge
10%inclusion9 decks88 decks
-6%synergy