Eirdu, Carrier of Dawn
Mikaeus, the Unhallowed
Phyrexian Altar

   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 Phyrexian Altar 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 Phyrexian Altar 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
Repeat.

   Results

What do I get from this combo?
Infinite LTB
Infinite ETB
Infinite colored mana
Infinite sacrifice triggers
Infinite death triggers
Eirdu, Carrier of Dawn
35%inclusion249 decks719 decks
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New Cards
Bitterbloom Bearer
33%inclusion92 decks275 decks
33%synergy
Emptiness
21%inclusion57 decks275 decks
21%synergy
Haru, Hidden Talent
13%inclusion1 decks8 decks
11%synergy
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13%inclusion1 decks8 decks
12%synergy
Morningtide's Light
7.3%inclusion20 decks275 decks
7%synergy
High Synergy Cards
Ashnod's Altar
86%inclusion236 decks275 decks
79%synergy
Murderous Redcap
75%inclusion6 decks8 decks
73%synergy
Goblin Bombardment
75%inclusion6 decks8 decks
69%synergy
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75%inclusion6 decks8 decks
66%synergy
Viscera Seer
73%inclusion202 decks275 decks
65%synergy
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74%inclusion203 decks275 decks
64%synergy
Kitchen Finks
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62%synergy
Pitiless Plunderer
70%inclusion192 decks275 decks
61%synergy
Warren Soultrader
67%inclusion183 decks275 decks
61%synergy
Luminous Broodmoth
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59%synergy
Top Cards
Three Visits
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51%synergy
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12%synergy
Blood Artist
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55%synergy
Zulaport Cutthroat
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57%synergy
Nature's Lore
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31%synergy
Farseek
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27%synergy
Cruel Celebrant
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54%synergy
Dark Ritual
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35%synergy
Cathars' Crusade
58%inclusion160 decks275 decks
53%synergy
Carrion Feeder
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Game Changers
Demonic Tutor
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Ancient Tomb
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Imperial Seal
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7%synergy
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7%synergy
Creatures
Geralf's Messenger
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53%synergy
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Grim Haruspex
48%inclusion133 decks275 decks
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Sephiroth, Fabled SOLDIER
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Solemn Simulacrum
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Umbral Collar Zealot
46%inclusion127 decks275 decks
43%synergy
Yawgmoth, Thran Physician
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43%synergy
Corpse Knight
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41%synergy
Marionette Apprentice
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41%synergy
Witch Enchanter
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Esper Sentinel
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21%synergy
Herd Baloth
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37%synergy
Scurry Oak
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36%synergy
Chainer, Nightmare Adept
38%inclusion3 decks8 decks
33%synergy
Gray Merchant of Asphodel
37%inclusion103 decks275 decks
29%synergy
Scholar of New Horizons
36%inclusion98 decks275 decks
34%synergy
Lotho, Corrupt Shirriff
35%inclusion95 decks275 decks
21%synergy
Morbid Opportunist
33%inclusion92 decks275 decks
26%synergy
Midnight Reaper
32%inclusion89 decks275 decks
29%synergy
Elenda, the Dusk Rose
31%inclusion86 decks275 decks
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Charismatic Conqueror
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28%synergy
Woe Strider
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29%synergy
Butcher Ghoul
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29%synergy
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23%synergy
Teysa Karlov
27%inclusion75 decks275 decks
23%synergy
Vizier of Remedies
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27%synergy
Pawn of Ulamog
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25%synergy
Sun Titan
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17%synergy
Braids, Arisen Nightmare
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Accursed Marauder
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Solitude
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18%synergy
Enduring Innocence
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16%synergy
Welcoming Vampire
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Loran of the Third Path
19%inclusion52 decks275 decks
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11%synergy
Grand Abolisher
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13%synergy
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12%synergy
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Instants
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Afterlife Insurance
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5%synergy
Sejiri Shelter
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Sorceries
Cultivate
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Kodama's Reach
38%inclusion3 decks8 decks
10%synergy
Damn
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22%synergy
Toxic Deluge
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12%synergy
Agadeem's Awakening
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13%synergy
Austere Command
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4%synergy
Night's Whisper
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Blasphemous Edict
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8%synergy
Farewell
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Damnation
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Torment of Hailfire
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Vindicate
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Feed the Swarm
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Sevinne's Reclamation
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-1%synergy
Wrath of God
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Rite of Oblivion
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Beseech the Mirror
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3%synergy
Dread Return
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Utility Artifacts
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47%synergy
Altar of Dementia
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52%synergy
Lightning Greaves
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Blasting Station
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38%synergy
Swiftfoot Boots
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15%synergy
The One Ring
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5%synergy
Jet Medallion
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7%synergy
Pearl Medallion
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6%synergy
Spawning Pit
8.0%inclusion22 decks275 decks
8%synergy
Archaeomancer's Map
5.1%inclusion14 decks275 decks
2%synergy
Mithril Coat
5.1%inclusion14 decks275 decks
1%synergy
Enchantments
Solemnity
55%inclusion150 decks275 decks
54%synergy
Bastion of Remembrance
50%inclusion137 decks275 decks
43%synergy
Grave Pact
39%inclusion107 decks275 decks
34%synergy
Impact Tremors
38%inclusion3 decks8 decks
28%synergy
The Meathook Massacre
37%inclusion103 decks275 decks
32%synergy
Bitterblossom
36%inclusion99 decks275 decks
32%synergy
Black Market Connections
35%inclusion96 decks275 decks
23%synergy
Phyrexian Arena
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14%synergy
Thran Vigil
27%inclusion74 decks275 decks
26%synergy
Land Tax
14%inclusion39 decks275 decks
8%synergy
Dictate of Erebos
13%inclusion37 decks275 decks
10%synergy
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13%inclusion36 decks275 decks
12%synergy
Animate Dead
13%inclusion35 decks275 decks
4%synergy
Funeral Room // Awakening Hall
10%inclusion27 decks275 decks
8%synergy
Fanatical Devotion
7.6%inclusion21 decks275 decks
7%synergy
Barrensteppe Siege
7.6%inclusion21 decks275 decks
6%synergy
Anointed Procession
7.3%inclusion20 decks275 decks
0%synergy
Skrelv's Hive
6.5%inclusion18 decks275 decks
5%synergy
Martyr's Cause
5.8%inclusion16 decks275 decks
5%synergy
Virtue of Loyalty
5.8%inclusion16 decks275 decks
4%synergy
Trouble in Pairs
5.5%inclusion15 decks275 decks
1%synergy
Felidar Retreat
5.1%inclusion14 decks275 decks
-1%synergy
Planeswalkers
Liliana, Dreadhorde General
22%inclusion60 decks275 decks
18%synergy
Elspeth, Storm Slayer
9.1%inclusion25 decks275 decks
4%synergy
Utility Lands
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55%synergy
Mistrise Village
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42%synergy
Urborg, Tomb of Yawgmoth
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39%synergy
Bojuka Bog
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11%synergy
High Market
27%inclusion75 decks275 decks
25%synergy
Takenuma, Abandoned Mire
27%inclusion75 decks275 decks
18%synergy
Reliquary Tower
26%inclusion72 decks275 decks
-4%synergy
Cabal Coffers
25%inclusion70 decks275 decks
16%synergy
Eiganjo, Seat of the Empire
24%inclusion65 decks275 decks
16%synergy
Susur Secundi, Void Altar
20%inclusion55 decks275 decks
17%synergy
Midgar, City of Mako
18%inclusion49 decks275 decks
14%synergy
Vault of the Archangel
16%inclusion45 decks275 decks
4%synergy
Nykthos, Shrine to Nyx
13%inclusion36 decks275 decks
8%synergy
Westvale Abbey
11%inclusion29 decks275 decks
8%synergy
Spymaster's Vault
10%inclusion27 decks275 decks
7%synergy
Urza's Saga
10%inclusion27 decks275 decks
3%synergy
Command Beacon
8.7%inclusion24 decks275 decks
4%synergy
Nesting Grounds
7.3%inclusion20 decks275 decks
5%synergy
Shizo, Death's Storehouse
6.9%inclusion19 decks275 decks
2%synergy
Minas Tirith
6.2%inclusion17 decks275 decks
-1%synergy
Castle Locthwain
5.8%inclusion16 decks275 decks
2%synergy
Abandoned Air Temple
5.4%inclusion7 decks129 decks
0%synergy
Mana Artifacts
Sol Ring
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9%synergy
Arcane Signet
85%inclusion233 decks275 decks
13%synergy
Talisman of Hierarchy
62%inclusion170 decks275 decks
36%synergy
Orzhov Signet
47%inclusion128 decks275 decks
22%synergy
Talisman of Indulgence
38%inclusion3 decks8 decks
10%synergy
The Soul Stone
27%inclusion74 decks275 decks
23%synergy
Fellwar Stone
24%inclusion67 decks275 decks
4%synergy
Thought Vessel
15%inclusion42 decks275 decks
-2%synergy
Mind Stone
13%inclusion37 decks275 decks
-2%synergy
Chrome Mox
11%inclusion29 decks275 decks
5%synergy
Lotus Petal
11%inclusion29 decks275 decks
3%synergy
Mana Vault
10%inclusion28 decks275 decks
4%synergy
Crowded Crypt
6.5%inclusion18 decks275 decks
5%synergy
Lands
Zagoth Triome
100%inclusion5 decks5 decks
72%synergy
Jetmir's Garden
100%inclusion4 decks4 decks
71%synergy
Godless Shrine
88%inclusion243 decks275 decks
48%synergy
Indatha Triome
88%inclusion7 decks8 decks
59%synergy
Temple Garden
88%inclusion7 decks8 decks
49%synergy
Overgrown Tomb
88%inclusion7 decks8 decks
47%synergy
Command Tower
87%inclusion238 decks275 decks
12%synergy
Spara's Headquarters
80%inclusion4 decks5 decks
52%synergy
Breeding Pool
80%inclusion4 decks5 decks
39%synergy
Savai Triome
75%inclusion6 decks8 decks
50%synergy
Ziatora's Proving Ground
75%inclusion3 decks4 decks
47%synergy
Vault of Champions
72%inclusion197 decks275 decks
47%synergy
Isolated Chapel
68%inclusion188 decks275 decks
35%synergy
Raffine's Tower
67%inclusion4 decks6 decks
42%synergy
Hallowed Fountain
67%inclusion4 decks6 decks
27%synergy
Watery Grave
67%inclusion4 decks6 decks
26%synergy
Shattered Sanctum
63%inclusion173 decks275 decks
48%synergy
Caves of Koilos
61%inclusion168 decks275 decks
32%synergy
Marsh Flats
58%inclusion160 decks275 decks
48%synergy
Bleachbone Verge
56%inclusion155 decks275 decks
48%synergy
Savannah
50%inclusion4 decks8 decks
37%synergy
Bayou
50%inclusion4 decks8 decks
37%synergy
Sacred Foundry
50%inclusion4 decks8 decks
14%synergy
Blood Crypt
50%inclusion4 decks8 decks
13%synergy
Fetid Heath
49%inclusion136 decks275 decks
37%synergy
Shadowy Backstreet
44%inclusion122 decks275 decks
34%synergy
Tainted Field
43%inclusion117 decks275 decks
29%synergy
Brightclimb Pathway
42%inclusion116 decks275 decks
34%synergy
Bountiful Promenade
38%inclusion3 decks8 decks
15%synergy
Undergrowth Stadium
38%inclusion3 decks8 decks
14%synergy
Shineshadow Snarl
28%inclusion78 decks275 decks
16%synergy
Silent Clearing
25%inclusion68 decks275 decks
20%synergy
Scrubland
25%inclusion68 decks275 decks
11%synergy
Exotic Orchard
25%inclusion68 decks275 decks
-12%synergy
Fabled Passage
23%inclusion64 decks275 decks
14%synergy
Concealed Courtyard
23%inclusion63 decks275 decks
17%synergy
Orzhov Basilica
21%inclusion58 decks275 decks
6%synergy
Temple of Silence
20%inclusion55 decks275 decks
2%synergy
Desolate Mire
17%inclusion47 decks275 decks
11%synergy
Prismatic Vista
14%inclusion39 decks275 decks
9%synergy
Flooded Strand
14%inclusion38 decks275 decks
2%synergy
Arid Mesa
13%inclusion37 decks275 decks
3%synergy
Windswept Heath
12%inclusion34 decks275 decks
1%synergy
Bloodstained Mire
12%inclusion34 decks275 decks
1%synergy
Polluted Delta
12%inclusion34 decks275 decks
0%synergy
Verdant Catacombs
11%inclusion31 decks275 decks
0%synergy
Reflecting Pool
10%inclusion28 decks275 decks
5%synergy
Mana Confluence
10%inclusion28 decks275 decks
3%synergy
City of Brass
9.5%inclusion26 decks275 decks
2%synergy
Cavern of Souls
7.6%inclusion21 decks275 decks
0%synergy