Eirdu, Carrier of Dawn
Umbral Collar Zealot

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield (Eirdu as Isilu, Carrier of Twilight on the battlefield).

   Steps

How does this combo work?
1
Activate Umbral Collar Zealot by sacrificing the undying 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 Umbral Collar Zealot by sacrificing the undying creature.
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 Umbral Collar Zealot 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 surveil 1
Eirdu, Carrier of Dawn
41%inclusion230 decks567 decks
Top Commanders
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0.9%inclusion18 decks2.03K decks
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0.9%inclusion8 decks882 decks
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0.2%inclusion5 decks2.98K decks
Karador, Ghost Chieftain
0.5%inclusion4 decks883 decks
Tayam, Luminous Enigma
0.3%inclusion4 decks1.25K decks
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0.1%inclusion2 decks2.59K decks
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0.2%inclusion2 decks1.17K decks
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0.0%inclusion1 decks2.57K decks
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0.3%inclusion1 decks323 decks
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0.8%inclusion1 decks128 decks
Tevesh Szat, Doom of Fools // Yoshimaru, Ever Faithful
5.0%inclusion1 decks20 decks
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0.2%inclusion1 decks526 decks
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100%inclusion1 decks1 decks
Athreos, God of Passage
0.1%inclusion1 decks1.09K decks
Othelm, Sigardian Outcast // Wernog, Rider's Chaplain
0.6%inclusion1 decks163 decks
Shadrix Silverquill
0.2%inclusion1 decks445 decks
Queza, Augur of Agonies
0.1%inclusion1 decks1.15K decks
New Cards
Formidable Speaker
36%inclusion4 decks11 decks
36%synergy
Emptiness
23%inclusion66 decks283 decks
23%synergy
Bitterbloom Bearer
23%inclusion64 decks283 decks
22%synergy
Redirect Lightning
11%inclusion2 decks19 decks
6%synergy
Haru, Hidden Talent
8.3%inclusion1 decks12 decks
7%synergy
High Synergy Cards
Goblin Bombardment
95%inclusion18 decks19 decks
89%synergy
Murderous Redcap
89%inclusion17 decks19 decks
88%synergy
Viscera Seer
83%inclusion235 decks283 decks
75%synergy
Mayhem Devil
74%inclusion14 decks19 decks
64%synergy
Elas il-Kor, Sadistic Pilgrim
71%inclusion202 decks283 decks
61%synergy
Ashnod's Altar
66%inclusion186 decks283 decks
59%synergy
Zulaport Cutthroat
67%inclusion190 decks283 decks
58%synergy
Warren Soultrader
62%inclusion175 decks283 decks
56%synergy
Carrion Feeder
59%inclusion167 decks283 decks
55%synergy
Pitiless Plunderer
63%inclusion177 decks283 decks
54%synergy
Top Cards
Swords to Plowshares
60%inclusion170 decks283 decks
-2%synergy
Cruel Celebrant
59%inclusion167 decks283 decks
51%synergy
Blood Artist
58%inclusion163 decks283 decks
46%synergy
Skullclamp
54%inclusion154 decks283 decks
43%synergy
Phyrexian Altar
53%inclusion151 decks283 decks
50%synergy
Marionette Apprentice
51%inclusion143 decks283 decks
46%synergy
Bastion of Remembrance
50%inclusion142 decks283 decks
44%synergy
Luminous Broodmoth
50%inclusion141 decks283 decks
47%synergy
Path to Exile
50%inclusion141 decks283 decks
3%synergy
Dark Ritual
49%inclusion138 decks283 decks
25%synergy
Game Changers
Demonic Tutor
27%inclusion77 decks283 decks
7%synergy
Vampiric Tutor
16%inclusion46 decks283 decks
1%synergy
Ancient Tomb
13%inclusion38 decks283 decks
4%synergy
Orcish Bowmasters
10%inclusion28 decks283 decks
1%synergy
Bolas's Citadel
8.8%inclusion25 decks283 decks
1%synergy
The One Ring
7.8%inclusion22 decks283 decks
-1%synergy
Imperial Seal
7.1%inclusion20 decks283 decks
2%synergy
Necropotence
6.7%inclusion19 decks283 decks
1%synergy
Mana Vault
6.4%inclusion18 decks283 decks
0%synergy
Chrome Mox
6.4%inclusion18 decks283 decks
0%synergy
Creatures
Mikaeus, the Unhallowed
48%inclusion136 decks283 decks
46%synergy
Grim Haruspex
47%inclusion132 decks283 decks
44%synergy
Witch Enchanter
46%inclusion131 decks283 decks
39%synergy
Solemn Simulacrum
46%inclusion131 decks283 decks
33%synergy
Corpse Knight
45%inclusion126 decks283 decks
39%synergy
Anger
42%inclusion8 decks19 decks
36%synergy
Honest Rutstein
42%inclusion5 decks12 decks
37%synergy
Disciple of Freyalise
42%inclusion5 decks12 decks
36%synergy
Eternal Witness
42%inclusion5 decks12 decks
24%synergy
Birds of Paradise
42%inclusion5 decks12 decks
14%synergy
Sephiroth, Fabled SOLDIER
41%inclusion115 decks283 decks
38%synergy
Woe Strider
40%inclusion112 decks283 decks
38%synergy
Geralf's Messenger
39%inclusion110 decks283 decks
39%synergy
Yawgmoth, Thran Physician
39%inclusion109 decks283 decks
35%synergy
Scholar of New Horizons
37%inclusion106 decks283 decks
36%synergy
Bartolomé del Presidio
37%inclusion106 decks283 decks
33%synergy
Imperial Recruiter
37%inclusion7 decks19 decks
32%synergy
Kitchen Finks
33%inclusion4 decks12 decks
33%synergy
Aftermath Analyst
33%inclusion4 decks12 decks
29%synergy
Wood Elves
33%inclusion4 decks12 decks
28%synergy
Sakura-Tribe Elder
33%inclusion4 decks12 decks
16%synergy
Morbid Opportunist
33%inclusion94 decks283 decks
26%synergy
Midnight Reaper
33%inclusion92 decks283 decks
29%synergy
Gray Merchant of Asphodel
33%inclusion92 decks283 decks
24%synergy
Lotho, Corrupt Shirriff
29%inclusion81 decks283 decks
15%synergy
Furystoke Giant
26%inclusion5 decks19 decks
26%synergy
Thunderblust
26%inclusion5 decks19 decks
26%synergy
Flayer of the Hatebound
26%inclusion5 decks19 decks
26%synergy
Terra, Herald of Hope
26%inclusion5 decks19 decks
25%synergy
Dualcaster Mage
26%inclusion5 decks19 decks
22%synergy
Chainer, Nightmare Adept
26%inclusion5 decks19 decks
22%synergy
Esper Sentinel
26%inclusion74 decks283 decks
7%synergy
Pawn of Ulamog
26%inclusion73 decks283 decks
24%synergy
Melira, Sylvok Outcast
25%inclusion3 decks12 decks
25%synergy
Fiend Artisan
25%inclusion3 decks12 decks
23%synergy
Warden of the Grove
25%inclusion3 decks12 decks
23%synergy
Satyr Wayfinder
25%inclusion3 decks12 decks
23%synergy
Endurance
25%inclusion3 decks12 decks
23%synergy
Devoted Druid
25%inclusion3 decks12 decks
22%synergy
Spore Frog
25%inclusion3 decks12 decks
22%synergy
Meren of Clan Nel Toth
25%inclusion3 decks12 decks
21%synergy
Six
25%inclusion3 decks12 decks
20%synergy
Skull Prophet
25%inclusion3 decks12 decks
19%synergy
Wight of the Reliquary
25%inclusion3 decks12 decks
19%synergy
Charismatic Conqueror
24%inclusion69 decks283 decks
21%synergy
Elenda, the Dusk Rose
24%inclusion67 decks283 decks
18%synergy
Loran of the Third Path
23%inclusion66 decks283 decks
16%synergy
Welcoming Vampire
23%inclusion64 decks283 decks
17%synergy
Sun Titan
23%inclusion64 decks283 decks
14%synergy
Enduring Innocence
22%inclusion63 decks283 decks
18%synergy
Instants
Anguished Unmaking
45%inclusion128 decks283 decks
21%synergy
Deadly Dispute
44%inclusion125 decks283 decks
32%synergy
Village Rites
36%inclusion101 decks283 decks
26%synergy
Generous Gift
31%inclusion89 decks283 decks
8%synergy
Fell the Profane
30%inclusion85 decks283 decks
21%synergy
Malakir Rebirth
29%inclusion82 decks283 decks
21%synergy
Deflecting Swat
26%inclusion5 decks19 decks
10%synergy
Plumb the Forbidden
25%inclusion72 decks283 decks
23%synergy
Assassin's Trophy
25%inclusion3 decks12 decks
-5%synergy
Corrupted Conviction
25%inclusion70 decks283 decks
20%synergy
Flare of Fortitude
24%inclusion69 decks283 decks
20%synergy
Burnt Offering
21%inclusion4 decks19 decks
19%synergy
Despark
18%inclusion50 decks283 decks
4%synergy
Inkshield
17%inclusion47 decks283 decks
10%synergy
First Day of Class
16%inclusion3 decks19 decks
16%synergy
Pyroblast
16%inclusion3 decks19 decks
10%synergy
Untimely Malfunction
16%inclusion3 decks19 decks
8%synergy
Deadly Rollick
15%inclusion42 decks283 decks
2%synergy
Enlightened Tutor
13%inclusion37 decks283 decks
-3%synergy
Culling the Weak
13%inclusion36 decks283 decks
9%synergy
Saw in Half
12%inclusion35 decks283 decks
8%synergy
Stroke of Midnight
11%inclusion32 decks283 decks
1%synergy
Imp's Mischief
11%inclusion31 decks283 decks
7%synergy
Clever Concealment
11%inclusion31 decks283 decks
7%synergy
Afterlife Insurance
11%inclusion30 decks283 decks
10%synergy
Flare of Malice
10%inclusion29 decks283 decks
8%synergy
Ephemerate
10%inclusion28 decks283 decks
4%synergy
Reprieve
10%inclusion27 decks283 decks
5%synergy
Fracture
9.2%inclusion26 decks283 decks
4%synergy
Silence
9.2%inclusion26 decks283 decks
3%synergy
Teferi's Protection
8.8%inclusion25 decks283 decks
-8%synergy
Cauldron Haze
8.1%inclusion23 decks283 decks
8%synergy
Entomb
7.8%inclusion22 decks283 decks
1%synergy
Flawless Maneuver
7.8%inclusion22 decks283 decks
-3%synergy
Sejiri Shelter
7.1%inclusion20 decks283 decks
4%synergy
Duty Beyond Death
6.7%inclusion19 decks283 decks
5%synergy
Mortify
6.0%inclusion17 decks283 decks
-5%synergy
Cabal Ritual
5.3%inclusion15 decks283 decks
0%synergy
Sorceries
Victimize
43%inclusion121 decks283 decks
30%synergy
Damn
37%inclusion104 decks283 decks
21%synergy
Reanimate
33%inclusion94 decks283 decks
15%synergy
Diabolic Intent
33%inclusion92 decks283 decks
25%synergy
Faithless Looting
26%inclusion5 decks19 decks
10%synergy
Toxic Deluge
23%inclusion66 decks283 decks
5%synergy
Blasphemous Act
21%inclusion4 decks19 decks
-12%synergy
Blasphemous Edict
17%inclusion49 decks283 decks
11%synergy
Night's Whisper
16%inclusion46 decks283 decks
7%synergy
Agadeem's Awakening
16%inclusion44 decks283 decks
12%synergy
Sevinne's Reclamation
12%inclusion35 decks283 decks
5%synergy
Austere Command
12%inclusion35 decks283 decks
0%synergy
Living Death
11%inclusion32 decks283 decks
6%synergy
Raise the Past
11%inclusion30 decks283 decks
9%synergy
Dread Return
8.8%inclusion25 decks283 decks
4%synergy
Sign in Blood
8.8%inclusion25 decks283 decks
0%synergy
Farewell
8.1%inclusion23 decks283 decks
-5%synergy
Rite of Oblivion
7.1%inclusion20 decks283 decks
5%synergy
Insatiable Avarice
6.4%inclusion18 decks283 decks
3%synergy
Beseech the Mirror
6.4%inclusion18 decks283 decks
3%synergy
Morningtide's Light
5.7%inclusion16 decks283 decks
6%synergy
Ascend from Avernus
5.3%inclusion15 decks283 decks
4%synergy
Exsanguinate
5.3%inclusion15 decks283 decks
-1%synergy
Utility Artifacts
Altar of Dementia
40%inclusion113 decks283 decks
38%synergy
The Great Henge
33%inclusion4 decks12 decks
24%synergy
Lightning Greaves
30%inclusion86 decks283 decks
5%synergy
Blasting Station
26%inclusion74 decks283 decks
26%synergy
Swiftfoot Boots
18%inclusion50 decks283 decks
-10%synergy
Oketra's Monument
15%inclusion42 decks283 decks
13%synergy
Pearl Medallion
8.1%inclusion23 decks283 decks
6%synergy
Spawning Pit
7.4%inclusion21 decks283 decks
7%synergy
Cauldron of Souls
6.7%inclusion19 decks283 decks
6%synergy
Wayfarer's Bauble
6.7%inclusion19 decks283 decks
-1%synergy
Jet Medallion
6.0%inclusion17 decks283 decks
2%synergy
Enchantments
Impact Tremors
47%inclusion9 decks19 decks
37%synergy
Cathars' Crusade
40%inclusion114 decks283 decks
35%synergy
Insidious Roots
33%inclusion4 decks12 decks
28%synergy
Solemnity
33%inclusion92 decks283 decks
32%synergy
Black Market Connections
28%inclusion79 decks283 decks
16%synergy
The Meathook Massacre
28%inclusion78 decks283 decks
22%synergy
Thran Vigil
27%inclusion77 decks283 decks
27%synergy
Abzan Ascendancy
25%inclusion3 decks12 decks
24%synergy
Bitterblossom
24%inclusion69 decks283 decks
20%synergy
Phyrexian Arena
23%inclusion66 decks283 decks
8%synergy
Grave Pact
18%inclusion51 decks283 decks
13%synergy
Warleader's Call
16%inclusion3 decks19 decks
8%synergy
Smothering Tithe
14%inclusion39 decks283 decks
-8%synergy
Sothera, the Supervoid
11%inclusion32 decks283 decks
10%synergy
Animate Dead
11%inclusion32 decks283 decks
2%synergy
Funeral Room // Awakening Hall
10%inclusion27 decks283 decks
8%synergy
Fanatical Devotion
8.5%inclusion24 decks283 decks
8%synergy
Tocasia's Welcome
8.5%inclusion24 decks283 decks
5%synergy
Martyr's Cause
7.8%inclusion22 decks283 decks
7%synergy
Land Tax
7.8%inclusion22 decks283 decks
1%synergy
Barrensteppe Siege
7.4%inclusion21 decks283 decks
6%synergy
Felidar Retreat
7.4%inclusion21 decks283 decks
1%synergy
Virtue of Loyalty
6.4%inclusion18 decks283 decks
5%synergy
Dictate of Erebos
6.0%inclusion17 decks283 decks
3%synergy
Trouble in Pairs
5.7%inclusion16 decks283 decks
1%synergy
Planeswalkers
Grist, the Hunger Tide
25%inclusion3 decks12 decks
21%synergy
Liliana, Dreadhorde General
13%inclusion37 decks283 decks
9%synergy
Utility Lands
Phyrexian Tower
49%inclusion139 decks283 decks
40%synergy
Boseiju, Who Endures
42%inclusion5 decks12 decks
23%synergy
Bojuka Bog
40%inclusion114 decks283 decks
11%synergy
High Market
31%inclusion89 decks283 decks
29%synergy
Urborg, Tomb of Yawgmoth
29%inclusion81 decks283 decks
20%synergy
Shifting Woodland
25%inclusion3 decks12 decks
18%synergy
Takenuma, Abandoned Mire
24%inclusion67 decks283 decks
15%synergy
Susur Secundi, Void Altar
22%inclusion62 decks283 decks
19%synergy
Reliquary Tower
20%inclusion58 decks283 decks
-10%synergy
Midgar, City of Mako
18%inclusion51 decks283 decks
14%synergy
Vault of the Archangel
17%inclusion48 decks283 decks
5%synergy
Spymaster's Vault
15%inclusion43 decks283 decks
12%synergy
Eiganjo, Seat of the Empire
14%inclusion40 decks283 decks
7%synergy
Westvale Abbey
14%inclusion39 decks283 decks
12%synergy
Cabal Coffers
10%inclusion29 decks283 decks
0%synergy
Nesting Grounds
10%inclusion27 decks283 decks
8%synergy
Urza's Saga
8.1%inclusion23 decks283 decks
1%synergy
Command Beacon
7.8%inclusion22 decks283 decks
3%synergy
Castle Locthwain
7.4%inclusion21 decks283 decks
3%synergy
Emergence Zone
6.4%inclusion18 decks283 decks
4%synergy
Three Tree City
6.0%inclusion17 decks283 decks
1%synergy
Nykthos, Shrine to Nyx
6.0%inclusion17 decks283 decks
1%synergy
Mana Artifacts
Sol Ring
86%inclusion242 decks283 decks
2%synergy
Arcane Signet
84%inclusion238 decks283 decks
12%synergy
Talisman of Hierarchy
69%inclusion195 decks283 decks
43%synergy
Talisman of Indulgence
58%inclusion11 decks19 decks
30%synergy
Orzhov Signet
54%inclusion153 decks283 decks
30%synergy
Talisman of Conviction
42%inclusion8 decks19 decks
18%synergy
Fellwar Stone
36%inclusion102 decks283 decks
15%synergy
Rakdos Signet
26%inclusion5 decks19 decks
0%synergy
The Soul Stone
22%inclusion61 decks283 decks
18%synergy
Boros Signet
21%inclusion4 decks19 decks
1%synergy
Mind Stone
16%inclusion45 decks283 decks
1%synergy
Thought Vessel
13%inclusion37 decks283 decks
-4%synergy
Crowded Crypt
8.8%inclusion25 decks283 decks
7%synergy
Lotus Petal
6.7%inclusion19 decks283 decks
0%synergy
Lands
Command Tower
91%inclusion258 decks283 decks
17%synergy
Temple Garden
83%inclusion10 decks12 decks
45%synergy
Overgrown Tomb
83%inclusion10 decks12 decks
43%synergy
Godless Shrine
77%inclusion218 decks283 decks
36%synergy
Isolated Chapel
73%inclusion206 decks283 decks
40%synergy
Caves of Koilos
69%inclusion196 decks283 decks
40%synergy
Sacred Foundry
68%inclusion13 decks19 decks
32%synergy
Blood Crypt
63%inclusion12 decks19 decks
26%synergy
Battlefield Forge
58%inclusion11 decks19 decks
30%synergy
Clifftop Retreat
58%inclusion11 decks19 decks
23%synergy
Fetid Heath
55%inclusion155 decks283 decks
42%synergy
Shattered Sanctum
54%inclusion154 decks283 decks
40%synergy
Dragonskull Summit
53%inclusion10 decks19 decks
19%synergy
Vault of Champions
51%inclusion143 decks283 decks
26%synergy
Overgrown Farmland
50%inclusion6 decks12 decks
33%synergy
Sulfurous Springs
47%inclusion9 decks19 decks
24%synergy
Bleachbone Verge
46%inclusion131 decks283 decks
38%synergy
Marsh Flats
46%inclusion131 decks283 decks
36%synergy
Tainted Field
45%inclusion126 decks283 decks
31%synergy
Luxury Suite
42%inclusion8 decks19 decks
17%synergy
Savai Triome
42%inclusion8 decks19 decks
17%synergy
Lush Portico
42%inclusion5 decks12 decks
33%synergy
Underground Mortuary
42%inclusion5 decks12 decks
29%synergy
Deathcap Glade
42%inclusion5 decks12 decks
29%synergy
Indatha Triome
42%inclusion5 decks12 decks
14%synergy
Woodland Cemetery
42%inclusion5 decks12 decks
10%synergy
Shadowy Backstreet
41%inclusion117 decks283 decks
31%synergy
Elegant Parlor
37%inclusion7 decks19 decks
29%synergy
Raucous Theater
37%inclusion7 decks19 decks
27%synergy
Spectator Seating
37%inclusion7 decks19 decks
13%synergy
Nomad Outpost
37%inclusion7 decks19 decks
7%synergy
Brightclimb Pathway
35%inclusion98 decks283 decks
26%synergy
Savannah
33%inclusion4 decks12 decks
21%synergy
Bayou
33%inclusion4 decks12 decks
20%synergy
Brushland
33%inclusion4 decks12 decks
14%synergy
Sandsteppe Citadel
33%inclusion4 decks12 decks
8%synergy
Llanowar Wastes
33%inclusion4 decks12 decks
7%synergy
Sunpetal Grove
33%inclusion4 decks12 decks
6%synergy
Blazemire Verge
32%inclusion6 decks19 decks
21%synergy
Shineshadow Snarl
31%inclusion87 decks283 decks
18%synergy
Exotic Orchard
30%inclusion85 decks283 decks
-6%synergy
Orzhov Basilica
28%inclusion80 decks283 decks
13%synergy
Plateau
26%inclusion5 decks19 decks
14%synergy
Badlands
26%inclusion5 decks19 decks
13%synergy
Smoldering Marsh
26%inclusion5 decks19 decks
-7%synergy
Silent Clearing
25%inclusion71 decks283 decks
21%synergy
Wooded Bastion
25%inclusion3 decks12 decks
21%synergy
Nurturing Peatland
25%inclusion3 decks12 decks
20%synergy
Wastewood Verge
25%inclusion3 decks12 decks
18%synergy
Hushwood Verge
25%inclusion3 decks12 decks
16%synergy