Eirdu, Carrier of Dawn
Mikaeus, the Unhallowed
Altar of Dementia

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield (Eirdu as Isilu, Carrier of Twilight on the battlefield).
You control another nontoken non-Human creature with base toughness 2 or greater.

   Steps

How does this combo work?
1
Activate Altar of Dementia by sacrificing another nontoken non-Human creature
2
When the creature dies, its undying ability triggers, returning the creature from your graveyard to the battlefield with a +1/+1 counter on it.
3
Activate Altar of Dementia by sacrificing the creature with a +1/+1 counter on it.
4
When the creature dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
5
Resolve the Altar of Dementia abilities from step 1 and 3.
6
Repeat.

   Results

What do I get from this combo?
Infinite LTB
Infinite ETB
Infinite sacrifice triggers
Infinite death triggers
Infinite mill
Infinite self-mill
Eirdu, Carrier of Dawn
21%inclusion118 decks563 decks
Top Commanders
Celes, Rune Knight
0.3%inclusion5 decks1.99K decks
Ratadrabik of Urborg
0.3%inclusion3 decks865 decks
Go-Shintai of Life's Origin
0.0%inclusion2 decks4.09K decks
Nethroi, Apex of Death
0.1%inclusion1 decks1.02K decks
Ghave, Guru of Spores
0.1%inclusion1 decks1.08K decks
Tayam, Luminous Enigma
0.1%inclusion1 decks1.22K decks
New Cards
Bitterbloom Bearer
27%inclusion36 decks131 decks
27%synergy
Emptiness
24%inclusion32 decks131 decks
24%synergy
Haru, Hidden Talent
20%inclusion1 decks5 decks
19%synergy
Long Feng, Grand Secretariat
20%inclusion1 decks5 decks
20%synergy
Redirect Lightning
14%inclusion1 decks7 decks
10%synergy
High Synergy Cards
Murderous Redcap
100%inclusion7 decks7 decks
98%synergy
Ashnod's Altar
89%inclusion116 decks131 decks
82%synergy
Goblin Bombardment
86%inclusion6 decks7 decks
80%synergy
Melira, Sylvok Outcast
80%inclusion4 decks5 decks
80%synergy
Phyrexian Altar
82%inclusion107 decks131 decks
78%synergy
The Great Henge
80%inclusion4 decks5 decks
71%synergy
Viscera Seer
79%inclusion103 decks131 decks
70%synergy
Elas il-Kor, Sadistic Pilgrim
76%inclusion99 decks131 decks
66%synergy
Zulaport Cutthroat
73%inclusion96 decks131 decks
65%synergy
Cruel Celebrant
69%inclusion91 decks131 decks
62%synergy
Top Cards
Swords to Plowshares
71%inclusion93 decks131 decks
9%synergy
Pitiless Plunderer
69%inclusion91 decks131 decks
61%synergy
Blood Artist
69%inclusion91 decks131 decks
58%synergy
Carrion Feeder
66%inclusion86 decks131 decks
61%synergy
Cathars' Crusade
63%inclusion83 decks131 decks
58%synergy
Warren Soultrader
62%inclusion81 decks131 decks
56%synergy
Luminous Broodmoth
61%inclusion80 decks131 decks
59%synergy
Bastion of Remembrance
59%inclusion77 decks131 decks
52%synergy
Grim Haruspex
57%inclusion75 decks131 decks
54%synergy
Geralf's Messenger
56%inclusion74 decks131 decks
56%synergy
Game Changers
Demonic Tutor
48%inclusion63 decks131 decks
28%synergy
Vampiric Tutor
30%inclusion39 decks131 decks
14%synergy
Smothering Tithe
29%inclusion38 decks131 decks
7%synergy
Enlightened Tutor
26%inclusion34 decks131 decks
10%synergy
Teferi's Protection
24%inclusion31 decks131 decks
7%synergy
Ancient Tomb
18%inclusion23 decks131 decks
8%synergy
Imperial Seal
15%inclusion19 decks131 decks
9%synergy
Bolas's Citadel
13%inclusion17 decks131 decks
5%synergy
Necropotence
11%inclusion15 decks131 decks
6%synergy
Chrome Mox
11%inclusion14 decks131 decks
5%synergy
Creatures
Kitchen Finks
60%inclusion3 decks5 decks
60%synergy
Woodfall Primus
60%inclusion3 decks5 decks
59%synergy
Solemn Simulacrum
52%inclusion68 decks131 decks
39%synergy
Umbral Collar Zealot
51%inclusion67 decks131 decks
48%synergy
Marionette Apprentice
47%inclusion62 decks131 decks
42%synergy
Corpse Knight
45%inclusion59 decks131 decks
40%synergy
Yawgmoth, Thran Physician
44%inclusion58 decks131 decks
41%synergy
Scholar of New Horizons
44%inclusion57 decks131 decks
42%synergy
Sephiroth, Fabled SOLDIER
44%inclusion57 decks131 decks
41%synergy
Flayer of the Hatebound
43%inclusion3 decks7 decks
42%synergy
Gray Merchant of Asphodel
41%inclusion54 decks131 decks
33%synergy
Midnight Reaper
40%inclusion53 decks131 decks
37%synergy
Witch Enchanter
38%inclusion50 decks131 decks
31%synergy
Morbid Opportunist
37%inclusion48 decks131 decks
29%synergy
Bartolomé del Presidio
35%inclusion46 decks131 decks
31%synergy
Woe Strider
34%inclusion45 decks131 decks
32%synergy
Esper Sentinel
34%inclusion45 decks131 decks
15%synergy
Lotho, Corrupt Shirriff
34%inclusion44 decks131 decks
20%synergy
Butcher Ghoul
32%inclusion42 decks131 decks
32%synergy
Elenda, the Dusk Rose
27%inclusion35 decks131 decks
21%synergy
Sun Titan
27%inclusion35 decks131 decks
18%synergy
Vizier of Remedies
26%inclusion34 decks131 decks
26%synergy
Pawn of Ulamog
26%inclusion34 decks131 decks
24%synergy
Charismatic Conqueror
26%inclusion34 decks131 decks
23%synergy
Teysa Karlov
24%inclusion31 decks131 decks
19%synergy
Welcoming Vampire
22%inclusion29 decks131 decks
16%synergy
Junji, the Midnight Sky
21%inclusion27 decks131 decks
18%synergy
Loran of the Third Path
20%inclusion26 decks131 decks
13%synergy
Yahenni, Undying Partisan
19%inclusion25 decks131 decks
16%synergy
Boromir, Warden of the Tower
19%inclusion25 decks131 decks
15%synergy
Syr Konrad, the Grim
19%inclusion25 decks131 decks
11%synergy
Zack Fair
18%inclusion23 decks131 decks
16%synergy
Solitude
16%inclusion21 decks131 decks
14%synergy
Vengeful Bloodwitch
16%inclusion21 decks131 decks
14%synergy
Enduring Innocence
16%inclusion21 decks131 decks
12%synergy
Accursed Marauder
15%inclusion20 decks131 decks
10%synergy
Karmic Guide
15%inclusion19 decks131 decks
11%synergy
Selfless Spirit
15%inclusion19 decks131 decks
10%synergy
Braids, Arisen Nightmare
15%inclusion19 decks131 decks
7%synergy
Agent Venom
14%inclusion18 decks131 decks
13%synergy
Guardian of Faith
14%inclusion18 decks131 decks
12%synergy
Voice of Victory
14%inclusion18 decks131 decks
7%synergy
Grand Abolisher
14%inclusion18 decks131 decks
5%synergy
Knight of the White Orchid
13%inclusion17 decks131 decks
8%synergy
Reveillark
11%inclusion15 decks131 decks
10%synergy
Boggart Trawler
11%inclusion15 decks131 decks
8%synergy
Spirited Companion
11%inclusion14 decks131 decks
7%synergy
Orcish Bowmasters
11%inclusion14 decks131 decks
2%synergy
Ao, the Dawn Sky
10%inclusion13 decks131 decks
9%synergy
Teysa, Orzhov Scion
10%inclusion13 decks131 decks
8%synergy
Instants
Dark Ritual
56%inclusion74 decks131 decks
32%synergy
Anguished Unmaking
54%inclusion71 decks131 decks
30%synergy
Path to Exile
53%inclusion69 decks131 decks
6%synergy
Deadly Dispute
46%inclusion60 decks131 decks
34%synergy
Deflecting Swat
43%inclusion3 decks7 decks
26%synergy
Generous Gift
37%inclusion49 decks131 decks
14%synergy
Village Rites
33%inclusion43 decks131 decks
23%synergy
Flare of Fortitude
29%inclusion38 decks131 decks
25%synergy
Fell the Profane
28%inclusion37 decks131 decks
19%synergy
Malakir Rebirth
23%inclusion30 decks131 decks
15%synergy
Deadly Rollick
21%inclusion28 decks131 decks
8%synergy
Despark
21%inclusion28 decks131 decks
8%synergy
Inkshield
19%inclusion25 decks131 decks
12%synergy
Culling the Weak
18%inclusion24 decks131 decks
14%synergy
Corrupted Conviction
18%inclusion24 decks131 decks
14%synergy
Plumb the Forbidden
18%inclusion23 decks131 decks
15%synergy
Silence
15%inclusion20 decks131 decks
9%synergy
Clever Concealment
13%inclusion17 decks131 decks
9%synergy
Reprieve
11%inclusion15 decks131 decks
7%synergy
Flawless Maneuver
10%inclusion13 decks131 decks
0%synergy
Imp's Mischief
9.2%inclusion12 decks131 decks
5%synergy
Saw in Half
9.2%inclusion12 decks131 decks
5%synergy
Flare of Malice
8.4%inclusion11 decks131 decks
6%synergy
Fracture
8.4%inclusion11 decks131 decks
3%synergy
Stroke of Midnight
8.4%inclusion11 decks131 decks
-2%synergy
Cabal Ritual
7.6%inclusion10 decks131 decks
3%synergy
Entomb
7.6%inclusion10 decks131 decks
1%synergy
Duty Beyond Death
6.1%inclusion8 decks131 decks
5%synergy
Cauldron Haze
5.3%inclusion7 decks131 decks
5%synergy
Sorceries
Three Visits
60%inclusion3 decks5 decks
36%synergy
Nature's Lore
60%inclusion3 decks5 decks
28%synergy
Farseek
60%inclusion3 decks5 decks
24%synergy
Diabolic Intent
44%inclusion57 decks131 decks
36%synergy
Damn
39%inclusion51 decks131 decks
23%synergy
Victimize
38%inclusion50 decks131 decks
26%synergy
Reanimate
37%inclusion48 decks131 decks
18%synergy
Toxic Deluge
31%inclusion40 decks131 decks
12%synergy
Night's Whisper
17%inclusion22 decks131 decks
8%synergy
Blasphemous Edict
11%inclusion15 decks131 decks
5%synergy
Living Death
11%inclusion14 decks131 decks
5%synergy
Austere Command
11%inclusion14 decks131 decks
-2%synergy
Agadeem's Awakening
10%inclusion13 decks131 decks
7%synergy
Torment of Hailfire
10%inclusion13 decks131 decks
6%synergy
Sevinne's Reclamation
10%inclusion13 decks131 decks
3%synergy
Sign in Blood
10%inclusion13 decks131 decks
1%synergy
Wrath of God
9.2%inclusion12 decks131 decks
4%synergy
Farewell
9.2%inclusion12 decks131 decks
-4%synergy
Damnation
7.6%inclusion10 decks131 decks
1%synergy
Grim Tutor
6.9%inclusion9 decks131 decks
3%synergy
Vindicate
6.9%inclusion9 decks131 decks
1%synergy
Read the Bones
6.9%inclusion9 decks131 decks
1%synergy
Beseech the Mirror
6.1%inclusion8 decks131 decks
3%synergy
Buried Alive
6.1%inclusion8 decks131 decks
0%synergy
Exsanguinate
6.1%inclusion8 decks131 decks
-1%synergy
Feed the Swarm
6.1%inclusion8 decks131 decks
-11%synergy
Utility Artifacts
Skullclamp
52%inclusion68 decks131 decks
41%synergy
Lightning Greaves
44%inclusion57 decks131 decks
19%synergy
Blasting Station
43%inclusion56 decks131 decks
42%synergy
Swiftfoot Boots
24%inclusion32 decks131 decks
-3%synergy
Oketra's Monument
15%inclusion20 decks131 decks
14%synergy
Spawning Pit
13%inclusion17 decks131 decks
13%synergy
The One Ring
11%inclusion14 decks131 decks
2%synergy
Jet Medallion
9.2%inclusion12 decks131 decks
6%synergy
Altar of the Brood
7.6%inclusion10 decks131 decks
7%synergy
Archaeomancer's Map
7.6%inclusion10 decks131 decks
4%synergy
Mithril Coat
7.6%inclusion10 decks131 decks
3%synergy
Wayfarer's Bauble
6.1%inclusion8 decks131 decks
-2%synergy
Cauldron of Souls
5.3%inclusion7 decks131 decks
5%synergy
Pearl Medallion
5.3%inclusion7 decks131 decks
3%synergy
Enchantments
Solemnity
54%inclusion71 decks131 decks
53%synergy
Impact Tremors
43%inclusion3 decks7 decks
33%synergy
Phyrexian Arena
40%inclusion53 decks131 decks
25%synergy
The Meathook Massacre
40%inclusion52 decks131 decks
34%synergy
Grave Pact
38%inclusion50 decks131 decks
33%synergy
Black Market Connections
38%inclusion50 decks131 decks
26%synergy
Bitterblossom
36%inclusion47 decks131 decks
32%synergy
Thran Vigil
29%inclusion38 decks131 decks
29%synergy
Sothera, the Supervoid
13%inclusion17 decks131 decks
12%synergy
Fanatical Devotion
10%inclusion13 decks131 decks
9%synergy
Dictate of Erebos
10%inclusion13 decks131 decks
7%synergy
Land Tax
10%inclusion13 decks131 decks
4%synergy
Funeral Room // Awakening Hall
9.2%inclusion12 decks131 decks
7%synergy
Animate Dead
9.2%inclusion12 decks131 decks
0%synergy
Martyr's Cause
8.4%inclusion11 decks131 decks
8%synergy
Barrensteppe Siege
6.1%inclusion8 decks131 decks
4%synergy
Dance of the Dead
5.3%inclusion7 decks131 decks
4%synergy
Trouble in Pairs
5.3%inclusion7 decks131 decks
1%synergy
Felidar Retreat
5.3%inclusion7 decks131 decks
-1%synergy
Planeswalkers
Liliana, Dreadhorde General
19%inclusion25 decks131 decks
15%synergy
Utility Lands
Phyrexian Tower
59%inclusion77 decks131 decks
50%synergy
Urborg, Tomb of Yawgmoth
41%inclusion54 decks131 decks
32%synergy
Bojuka Bog
39%inclusion51 decks131 decks
9%synergy
High Market
29%inclusion38 decks131 decks
26%synergy
Takenuma, Abandoned Mire
25%inclusion33 decks131 decks
16%synergy
Reliquary Tower
24%inclusion31 decks131 decks
-6%synergy
Cabal Coffers
21%inclusion28 decks131 decks
12%synergy
Eiganjo, Seat of the Empire
18%inclusion23 decks131 decks
10%synergy
Susur Secundi, Void Altar
17%inclusion22 decks131 decks
14%synergy
Midgar, City of Mako
15%inclusion20 decks131 decks
11%synergy
Westvale Abbey
14%inclusion18 decks131 decks
12%synergy
Vault of the Archangel
13%inclusion17 decks131 decks
1%synergy
Nesting Grounds
11%inclusion14 decks131 decks
9%synergy
Spymaster's Vault
10%inclusion13 decks131 decks
7%synergy
Command Beacon
10%inclusion13 decks131 decks
5%synergy
Nykthos, Shrine to Nyx
7.6%inclusion10 decks131 decks
2%synergy
Urza's Saga
6.9%inclusion9 decks131 decks
0%synergy
Shizo, Death's Storehouse
5.3%inclusion7 decks131 decks
1%synergy
War Room
5.3%inclusion7 decks131 decks
-1%synergy
Mana Artifacts
Sol Ring
92%inclusion120 decks131 decks
8%synergy
Arcane Signet
85%inclusion112 decks131 decks
13%synergy
Talisman of Hierarchy
69%inclusion90 decks131 decks
42%synergy
Talisman of Conviction
57%inclusion4 decks7 decks
33%synergy
Talisman of Indulgence
57%inclusion4 decks7 decks
29%synergy
Orzhov Signet
50%inclusion66 decks131 decks
26%synergy
Fellwar Stone
29%inclusion38 decks131 decks
8%synergy
The Soul Stone
21%inclusion27 decks131 decks
17%synergy
Mind Stone
20%inclusion26 decks131 decks
5%synergy
Thought Vessel
17%inclusion22 decks131 decks
-1%synergy
Lotus Petal
10%inclusion13 decks131 decks
3%synergy
Mana Vault
9.2%inclusion12 decks131 decks
3%synergy
Crowded Crypt
6.1%inclusion8 decks131 decks
5%synergy
Mox Diamond
6.1%inclusion8 decks131 decks
2%synergy
White Lotus Tile
5.8%inclusion3 decks52 decks
5%synergy
Lands
Savai Triome
86%inclusion6 decks7 decks
61%synergy
Command Tower
85%inclusion112 decks131 decks
11%synergy
Godless Shrine
81%inclusion106 decks131 decks
40%synergy
Indatha Triome
80%inclusion4 decks5 decks
52%synergy
Temple Garden
80%inclusion4 decks5 decks
41%synergy
Overgrown Tomb
80%inclusion4 decks5 decks
40%synergy
Isolated Chapel
73%inclusion95 decks131 decks
40%synergy
Caves of Koilos
64%inclusion84 decks131 decks
35%synergy
Sandsteppe Citadel
60%inclusion3 decks5 decks
34%synergy
Vault of Champions
59%inclusion77 decks131 decks
34%synergy
Shattered Sanctum
58%inclusion76 decks131 decks
43%synergy
Marsh Flats
57%inclusion75 decks131 decks
47%synergy
Sacred Foundry
57%inclusion4 decks7 decks
21%synergy
Blood Crypt
57%inclusion4 decks7 decks
20%synergy
Fetid Heath
53%inclusion69 decks131 decks
40%synergy
Bleachbone Verge
52%inclusion68 decks131 decks
44%synergy
Tainted Field
44%inclusion58 decks131 decks
31%synergy
Sulfurous Springs
43%inclusion3 decks7 decks
20%synergy
Battlefield Forge
43%inclusion3 decks7 decks
15%synergy
Shadowy Backstreet
42%inclusion55 decks131 decks
32%synergy
Brightclimb Pathway
41%inclusion54 decks131 decks
33%synergy
Shineshadow Snarl
34%inclusion45 decks131 decks
22%synergy
Exotic Orchard
31%inclusion40 decks131 decks
-6%synergy
Silent Clearing
27%inclusion36 decks131 decks
23%synergy
Fabled Passage
24%inclusion32 decks131 decks
15%synergy
Concealed Courtyard
22%inclusion29 decks131 decks
16%synergy
Orzhov Basilica
21%inclusion28 decks131 decks
6%synergy
Scrubland
20%inclusion26 decks131 decks
6%synergy
Temple of Silence
18%inclusion24 decks131 decks
1%synergy
Flooded Strand
16%inclusion21 decks131 decks
5%synergy
Prismatic Vista
15%inclusion20 decks131 decks
10%synergy
Verdant Catacombs
15%inclusion20 decks131 decks
4%synergy
Desolate Mire
15%inclusion19 decks131 decks
8%synergy
Arid Mesa
15%inclusion19 decks131 decks
4%synergy
Bloodstained Mire
14%inclusion18 decks131 decks
3%synergy
Polluted Delta
14%inclusion18 decks131 decks
2%synergy
Windswept Heath
13%inclusion17 decks131 decks
2%synergy
Reflecting Pool
10%inclusion13 decks131 decks
5%synergy
Sunlit Marsh
8.4%inclusion11 decks131 decks
4%synergy
Mana Confluence
8.4%inclusion11 decks131 decks
1%synergy
City of Brass
8.4%inclusion11 decks131 decks
1%synergy
Evolving Wilds
8.4%inclusion11 decks131 decks
-12%synergy
Snowfield Sinkhole
6.1%inclusion8 decks131 decks
4%synergy
Cavern of Souls
6.1%inclusion8 decks131 decks
-1%synergy
Terramorphic Expanse
6.1%inclusion8 decks131 decks
-9%synergy
Myriad Landscape
5.3%inclusion7 decks131 decks
-11%synergy