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
Eirdu, Carrier of Dawn
41%inclusion342 decks832 decks
Top Commanders
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1.2%inclusion33 decks2.67K decks
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0.9%inclusion11 decks1.20K decks
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0.2%inclusion7 decks4K decks
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0.3%inclusion2 decks640 decks
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0.3%inclusion2 decks696 decks
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0.1%inclusion2 decks1.61K decks
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0.0%inclusion1 decks3.50K decks
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0.2%inclusion1 decks453 decks
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0.6%inclusion1 decks167 decks
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0.0%inclusion1 decks2.24K decks
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0.3%inclusion1 decks286 decks
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0.1%inclusion1 decks1.23K decks
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0.1%inclusion1 decks1.30K decks
The Necrobloom
0.0%inclusion1 decks4.12K decks
New Cards
Formidable Speaker
25%inclusion4 decks16 decks
25%synergy
Bitterbloom Bearer
23%inclusion97 decks427 decks
22%synergy
Emptiness
22%inclusion94 decks427 decks
22%synergy
Redirect Lightning
17%inclusion6 decks35 decks
12%synergy
Abandoned Air Temple
7.7%inclusion19 decks246 decks
3%synergy
High Synergy Cards
Murderous Redcap
91%inclusion32 decks35 decks
90%synergy
Goblin Bombardment
94%inclusion33 decks35 decks
89%synergy
Viscera Seer
84%inclusion358 decks427 decks
76%synergy
Ashnod's Altar
70%inclusion301 decks427 decks
64%synergy
Elas il-Kor, Sadistic Pilgrim
72%inclusion309 decks427 decks
63%synergy
Zulaport Cutthroat
68%inclusion289 decks427 decks
59%synergy
Carrion Feeder
62%inclusion264 decks427 decks
57%synergy
Warren Soultrader
62%inclusion264 decks427 decks
56%synergy
Pitiless Plunderer
65%inclusion276 decks427 decks
56%synergy
Cruel Celebrant
60%inclusion258 decks427 decks
53%synergy
Top Cards
Mayhem Devil
63%inclusion22 decks35 decks
53%synergy
Blood Artist
61%inclusion262 decks427 decks
50%synergy
Swords to Plowshares
61%inclusion262 decks427 decks
0%synergy
Phyrexian Altar
56%inclusion240 decks427 decks
53%synergy
Skullclamp
54%inclusion232 decks427 decks
43%synergy
Path to Exile
52%inclusion222 decks427 decks
5%synergy
Marionette Apprentice
52%inclusion220 decks427 decks
47%synergy
Dark Ritual
51%inclusion217 decks427 decks
27%synergy
Mikaeus, the Unhallowed
50%inclusion213 decks427 decks
47%synergy
Bastion of Remembrance
49%inclusion209 decks427 decks
42%synergy
Game Changers
Demonic Tutor
27%inclusion116 decks427 decks
8%synergy
Underworld Breach
20%inclusion7 decks35 decks
14%synergy
Gamble
20%inclusion7 decks35 decks
11%synergy
Vampiric Tutor
18%inclusion76 decks427 decks
3%synergy
Ancient Tomb
13%inclusion55 decks427 decks
3%synergy
Orcish Bowmasters
11%inclusion45 decks427 decks
2%synergy
Necropotence
7.5%inclusion32 decks427 decks
2%synergy
Imperial Seal
7.5%inclusion32 decks427 decks
2%synergy
Chrome Mox
7.0%inclusion30 decks427 decks
1%synergy
Mana Vault
6.3%inclusion27 decks427 decks
0%synergy
Creatures
Grim Haruspex
49%inclusion208 decks427 decks
46%synergy
Luminous Broodmoth
48%inclusion205 decks427 decks
46%synergy
Solemn Simulacrum
47%inclusion200 decks427 decks
34%synergy
Witch Enchanter
45%inclusion192 decks427 decks
38%synergy
Corpse Knight
43%inclusion185 decks427 decks
38%synergy
Anger
43%inclusion15 decks35 decks
36%synergy
Sephiroth, Fabled SOLDIER
42%inclusion180 decks427 decks
40%synergy
Geralf's Messenger
42%inclusion178 decks427 decks
41%synergy
Yawgmoth, Thran Physician
42%inclusion178 decks427 decks
38%synergy
Birds of Paradise
41%inclusion7 decks17 decks
14%synergy
Woe Strider
40%inclusion171 decks427 decks
38%synergy
Morbid Opportunist
37%inclusion158 decks427 decks
30%synergy
Scholar of New Horizons
37%inclusion156 decks427 decks
35%synergy
Bartolomé del Presidio
36%inclusion153 decks427 decks
31%synergy
Kitchen Finks
35%inclusion6 decks17 decks
35%synergy
Honest Rutstein
35%inclusion6 decks17 decks
30%synergy
Disciple of Freyalise
35%inclusion6 decks17 decks
30%synergy
Sakura-Tribe Elder
35%inclusion6 decks17 decks
18%synergy
Eternal Witness
35%inclusion6 decks17 decks
18%synergy
Terra, Herald of Hope
34%inclusion12 decks35 decks
33%synergy
Alesha, Who Laughs at Fate
34%inclusion12 decks35 decks
30%synergy
Gray Merchant of Asphodel
33%inclusion139 decks427 decks
24%synergy
Midnight Reaper
32%inclusion136 decks427 decks
29%synergy
Imperial Recruiter
31%inclusion11 decks35 decks
27%synergy
Esper Sentinel
30%inclusion128 decks427 decks
11%synergy
Aftermath Analyst
29%inclusion5 decks17 decks
25%synergy
Wood Elves
29%inclusion5 decks17 decks
25%synergy
Bloom Tender
29%inclusion5 decks17 decks
22%synergy
Lotho, Corrupt Shirriff
29%inclusion124 decks427 decks
16%synergy
Chainer, Nightmare Adept
29%inclusion10 decks35 decks
24%synergy
Vizier of Remedies
27%inclusion114 decks427 decks
27%synergy
Pawn of Ulamog
26%inclusion113 decks427 decks
25%synergy
Elenda, the Dusk Rose
25%inclusion106 decks427 decks
19%synergy
Sun Titan
24%inclusion102 decks427 decks
16%synergy
Fiend Artisan
24%inclusion4 decks17 decks
22%synergy
Warden of the Grove
24%inclusion4 decks17 decks
21%synergy
Endurance
24%inclusion4 decks17 decks
21%synergy
Meren of Clan Nel Toth
24%inclusion4 decks17 decks
20%synergy
Skull Prophet
24%inclusion4 decks17 decks
18%synergy
Wight of the Reliquary
24%inclusion4 decks17 decks
18%synergy
Icetill Explorer
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16%synergy
Faeburrow Elder
24%inclusion4 decks17 decks
12%synergy
Charismatic Conqueror
23%inclusion99 decks427 decks
20%synergy
Flayer of the Hatebound
23%inclusion8 decks35 decks
22%synergy
Dualcaster Mage
23%inclusion8 decks35 decks
18%synergy
Butcher Ghoul
23%inclusion97 decks427 decks
22%synergy
Welcoming Vampire
23%inclusion97 decks427 decks
17%synergy
Braids, Arisen Nightmare
22%inclusion96 decks427 decks
15%synergy
Loran of the Third Path
21%inclusion91 decks427 decks
14%synergy
Enduring Innocence
20%inclusion86 decks427 decks
16%synergy
Instants
Deadly Dispute
47%inclusion201 decks427 decks
35%synergy
Anguished Unmaking
44%inclusion187 decks427 decks
19%synergy
Village Rites
39%inclusion167 decks427 decks
30%synergy
Deflecting Swat
31%inclusion11 decks35 decks
15%synergy
Generous Gift
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7%synergy
Fell the Profane
29%inclusion124 decks427 decks
20%synergy
Malakir Rebirth
28%inclusion118 decks427 decks
20%synergy
Corrupted Conviction
24%inclusion102 decks427 decks
19%synergy
Assassin's Trophy
24%inclusion4 decks17 decks
-7%synergy
Plumb the Forbidden
23%inclusion99 decks427 decks
21%synergy
Flare of Fortitude
22%inclusion96 decks427 decks
18%synergy
Big Score
20%inclusion7 decks35 decks
10%synergy
Inkshield
19%inclusion82 decks427 decks
12%synergy
Despark
18%inclusion77 decks427 decks
4%synergy
Heroic Intervention
18%inclusion3 decks17 decks
-13%synergy
Deadly Rollick
18%inclusion75 decks427 decks
4%synergy
Burnt Offering
17%inclusion6 decks35 decks
15%synergy
Pyroblast
17%inclusion6 decks35 decks
11%synergy
Laughing Mad
14%inclusion5 decks35 decks
12%synergy
Culling the Weak
14%inclusion61 decks427 decks
10%synergy
Red Elemental Blast
14%inclusion5 decks35 decks
8%synergy
Untimely Malfunction
14%inclusion5 decks35 decks
6%synergy
Enlightened Tutor
14%inclusion61 decks427 decks
-1%synergy
Saw in Half
13%inclusion57 decks427 decks
9%synergy
Stroke of Midnight
11%inclusion49 decks427 decks
1%synergy
First Day of Class
11%inclusion4 decks35 decks
11%synergy
Crackling Doom
11%inclusion4 decks35 decks
4%synergy
Teferi's Protection
10%inclusion44 decks427 decks
-7%synergy
Imp's Mischief
10%inclusion42 decks427 decks
6%synergy
Clever Concealment
10%inclusion42 decks427 decks
6%synergy
Silence
10%inclusion42 decks427 decks
4%synergy
Entomb
9.4%inclusion40 decks427 decks
2%synergy
Flare of Malice
9.1%inclusion39 decks427 decks
7%synergy
Ephemerate
9.1%inclusion39 decks427 decks
3%synergy
Cauldron Haze
8.9%inclusion38 decks427 decks
8%synergy
Fracture
8.9%inclusion38 decks427 decks
3%synergy
Afterlife Insurance
8.7%inclusion37 decks427 decks
8%synergy
Bolt Bend
8.6%inclusion3 decks35 decks
4%synergy
Bedevil
8.6%inclusion3 decks35 decks
-4%synergy
Chaos Warp
8.6%inclusion3 decks35 decks
-22%synergy
Reprieve
8.4%inclusion36 decks427 decks
4%synergy
Mortify
8.0%inclusion34 decks427 decks
-3%synergy
Dawn's Truce
6.8%inclusion29 decks427 decks
0%synergy
Flawless Maneuver
6.8%inclusion29 decks427 decks
-4%synergy
Sejiri Shelter
6.6%inclusion28 decks427 decks
3%synergy
Cabal Ritual
6.6%inclusion28 decks427 decks
1%synergy
Duty Beyond Death
5.4%inclusion23 decks427 decks
4%synergy
Sorceries
Victimize
43%inclusion183 decks427 decks
31%synergy
Damn
38%inclusion163 decks427 decks
23%synergy
Reanimate
37%inclusion157 decks427 decks
18%synergy
Diabolic Intent
32%inclusion135 decks427 decks
24%synergy
Faithless Looting
31%inclusion11 decks35 decks
15%synergy
Toxic Deluge
25%inclusion108 decks427 decks
7%synergy
Blasphemous Act
20%inclusion7 decks35 decks
-13%synergy
Night's Whisper
19%inclusion82 decks427 decks
10%synergy
Ruinous Ultimatum
17%inclusion6 decks35 decks
-2%synergy
Agadeem's Awakening
15%inclusion66 decks427 decks
12%synergy
Blasphemous Edict
15%inclusion65 decks427 decks
9%synergy
Jeska's Will
14%inclusion5 decks35 decks
-1%synergy
Sevinne's Reclamation
14%inclusion58 decks427 decks
6%synergy
Living Death
12%inclusion51 decks427 decks
7%synergy
Austere Command
12%inclusion51 decks427 decks
0%synergy
Sign in Blood
11%inclusion46 decks427 decks
2%synergy
Dread Return
10%inclusion42 decks427 decks
5%synergy
Sundering Eruption
8.6%inclusion3 decks35 decks
5%synergy
Vandalblast
8.6%inclusion3 decks35 decks
-7%synergy
Farewell
8.4%inclusion36 decks427 decks
-4%synergy
Raise the Past
7.7%inclusion33 decks427 decks
6%synergy
Rite of Oblivion
6.1%inclusion26 decks427 decks
4%synergy
Beseech the Mirror
5.9%inclusion25 decks427 decks
3%synergy
Morningtide's Light
5.6%inclusion24 decks427 decks
6%synergy
Insatiable Avarice
5.2%inclusion22 decks427 decks
2%synergy
Utility Artifacts
Altar of Dementia
43%inclusion184 decks427 decks
41%synergy
Lightning Greaves
31%inclusion133 decks427 decks
6%synergy
Blasting Station
27%inclusion117 decks427 decks
27%synergy
The Great Henge
24%inclusion4 decks17 decks
14%synergy
Swiftfoot Boots
19%inclusion80 decks427 decks
-9%synergy
Oketra's Monument
13%inclusion57 decks427 decks
12%synergy
Spawning Pit
8.9%inclusion38 decks427 decks
9%synergy
Bolas's Citadel
8.4%inclusion36 decks427 decks
0%synergy
Pearl Medallion
8.2%inclusion35 decks427 decks
6%synergy
Jet Medallion
7.3%inclusion31 decks427 decks
4%synergy
The One Ring
7.3%inclusion31 decks427 decks
-1%synergy
Cauldron of Souls
6.6%inclusion28 decks427 decks
6%synergy
Wayfarer's Bauble
5.6%inclusion24 decks427 decks
-2%synergy
Enchantments
Impact Tremors
46%inclusion16 decks35 decks
36%synergy
Cathars' Crusade
43%inclusion182 decks427 decks
37%synergy
Solemnity
35%inclusion148 decks427 decks
34%synergy
The Meathook Massacre
30%inclusion127 decks427 decks
25%synergy
Thran Vigil
29%inclusion125 decks427 decks
29%synergy
Black Market Connections
27%inclusion115 decks427 decks
15%synergy
Bitterblossom
24%inclusion102 decks427 decks
20%synergy
Insidious Roots
24%inclusion4 decks17 decks
18%synergy
Grave Pact
22%inclusion93 decks427 decks
17%synergy
Phyrexian Arena
22%inclusion92 decks427 decks
6%synergy
Warleader's Call
20%inclusion7 decks35 decks
13%synergy
Abzan Ascendancy
18%inclusion3 decks17 decks
16%synergy
Smothering Tithe
16%inclusion67 decks427 decks
-6%synergy
Animate Dead
12%inclusion52 decks427 decks
3%synergy
Sothera, the Supervoid
10%inclusion44 decks427 decks
9%synergy
Funeral Room // Awakening Hall
10%inclusion41 decks427 decks
8%synergy
Land Tax
10%inclusion41 decks427 decks
3%synergy
Fanatical Devotion
7.5%inclusion32 decks427 decks
7%synergy
Dictate of Erebos
7.5%inclusion32 decks427 decks
4%synergy
Martyr's Cause
7.0%inclusion30 decks427 decks
7%synergy
Barrensteppe Siege
7.0%inclusion30 decks427 decks
5%synergy
Trouble in Pairs
6.8%inclusion29 decks427 decks
2%synergy
Tocasia's Welcome
6.1%inclusion26 decks427 decks
3%synergy
Skrelv's Hive
5.6%inclusion24 decks427 decks
4%synergy
Felidar Retreat
5.6%inclusion24 decks427 decks
0%synergy
Planeswalkers
Grist, the Hunger Tide
24%inclusion4 decks17 decks
20%synergy
Liliana, Dreadhorde General
13%inclusion56 decks427 decks
9%synergy
Elspeth, Storm Slayer
5.2%inclusion22 decks427 decks
0%synergy
Utility Lands
Phyrexian Tower
51%inclusion216 decks427 decks
42%synergy
Boseiju, Who Endures
41%inclusion7 decks17 decks
22%synergy
Bojuka Bog
40%inclusion169 decks427 decks
10%synergy
Urborg, Tomb of Yawgmoth
31%inclusion132 decks427 decks
22%synergy
High Market
31%inclusion131 decks427 decks
28%synergy
Takenuma, Abandoned Mire
24%inclusion103 decks427 decks
15%synergy
Susur Secundi, Void Altar
23%inclusion98 decks427 decks
20%synergy
Reliquary Tower
21%inclusion89 decks427 decks
-9%synergy
Midgar, City of Mako
18%inclusion78 decks427 decks
14%synergy
Shifting Woodland
18%inclusion3 decks17 decks
11%synergy
Vault of the Archangel
17%inclusion72 decks427 decks
5%synergy
Eiganjo, Seat of the Empire
14%inclusion60 decks427 decks
7%synergy
Spymaster's Vault
14%inclusion59 decks427 decks
11%synergy
Westvale Abbey
12%inclusion52 decks427 decks
10%synergy
Cabal Coffers
11%inclusion48 decks427 decks
2%synergy
Nesting Grounds
8.9%inclusion38 decks427 decks
7%synergy
Command Beacon
7.5%inclusion32 decks427 decks
3%synergy
Urza's Saga
7.3%inclusion31 decks427 decks
0%synergy
Castle Locthwain
6.3%inclusion27 decks427 decks
2%synergy
Nykthos, Shrine to Nyx
6.1%inclusion26 decks427 decks
1%synergy
Three Tree City
5.4%inclusion23 decks427 decks
0%synergy
Emergence Zone
5.2%inclusion22 decks427 decks
3%synergy
Mana Artifacts
Sol Ring
87%inclusion371 decks427 decks
3%synergy
Arcane Signet
84%inclusion358 decks427 decks
12%synergy
Talisman of Hierarchy
66%inclusion282 decks427 decks
40%synergy
Talisman of Indulgence
54%inclusion19 decks35 decks
26%synergy
Orzhov Signet
54%inclusion229 decks427 decks
30%synergy
Talisman of Conviction
46%inclusion16 decks35 decks
21%synergy
Fellwar Stone
34%inclusion144 decks427 decks
13%synergy
Rakdos Signet
23%inclusion8 decks35 decks
-3%synergy
The Soul Stone
22%inclusion92 decks427 decks
17%synergy
Boros Signet
20%inclusion7 decks35 decks
0%synergy
Talisman of Unity
18%inclusion3 decks17 decks
10%synergy
Talisman of Resilience
18%inclusion3 decks17 decks
5%synergy
Mind Stone
15%inclusion63 decks427 decks
0%synergy
Thought Vessel
13%inclusion55 decks427 decks
-5%synergy
Lotus Petal
8.0%inclusion34 decks427 decks
1%synergy
Crowded Crypt
6.6%inclusion28 decks427 decks
5%synergy
Lands
Morphic Pool
100%inclusion3 decks3 decks
75%synergy
Hallowed Fountain
100%inclusion3 decks3 decks
61%synergy
Command Tower
91%inclusion389 decks427 decks
17%synergy
Temple Garden
82%inclusion14 decks17 decks
44%synergy
Overgrown Tomb
82%inclusion14 decks17 decks
42%synergy
Godless Shrine
78%inclusion335 decks427 decks
38%synergy
Sacred Foundry
77%inclusion27 decks35 decks
41%synergy
Isolated Chapel
74%inclusion314 decks427 decks
40%synergy
Blood Crypt
71%inclusion25 decks35 decks
34%synergy
Caves of Koilos
69%inclusion296 decks427 decks
40%synergy
Savai Triome
57%inclusion20 decks35 decks
33%synergy
Fetid Heath
56%inclusion241 decks427 decks
43%synergy
Vault of Champions
56%inclusion239 decks427 decks
32%synergy
Shattered Sanctum
55%inclusion235 decks427 decks
40%synergy
Clifftop Retreat
54%inclusion19 decks35 decks
20%synergy
Overgrown Farmland
53%inclusion9 decks17 decks
36%synergy
Luxury Suite
51%inclusion18 decks35 decks
27%synergy
Dragonskull Summit
51%inclusion18 decks35 decks
17%synergy
Marsh Flats
50%inclusion212 decks427 decks
39%synergy
Spectator Seating
49%inclusion17 decks35 decks
25%synergy
Battlefield Forge
49%inclusion17 decks35 decks
20%synergy
Deathcap Glade
47%inclusion8 decks17 decks
34%synergy
Indatha Triome
47%inclusion8 decks17 decks
19%synergy
Woodland Cemetery
47%inclusion8 decks17 decks
16%synergy
Bleachbone Verge
46%inclusion197 decks427 decks
38%synergy
Tainted Field
45%inclusion192 decks427 decks
32%synergy
Shadowy Backstreet
42%inclusion181 decks427 decks
32%synergy
Lush Portico
41%inclusion7 decks17 decks
32%synergy
Underground Mortuary
41%inclusion7 decks17 decks
29%synergy
Sunpetal Grove
41%inclusion7 decks17 decks
14%synergy
Elegant Parlor
37%inclusion13 decks35 decks
30%synergy
Raucous Theater
37%inclusion13 decks35 decks
27%synergy
Sulfurous Springs
37%inclusion13 decks35 decks
14%synergy
Nomad Outpost
37%inclusion13 decks35 decks
7%synergy
Brightclimb Pathway
35%inclusion151 decks427 decks
27%synergy
Brushland
35%inclusion6 decks17 decks
16%synergy
Sandsteppe Citadel
35%inclusion6 decks17 decks
10%synergy
Llanowar Wastes
35%inclusion6 decks17 decks
9%synergy
Exotic Orchard
33%inclusion141 decks427 decks
-3%synergy
Shineshadow Snarl
31%inclusion131 decks427 decks
18%synergy
Bountiful Promenade
29%inclusion5 decks17 decks
7%synergy
Undergrowth Stadium
29%inclusion5 decks17 decks
6%synergy
Blazemire Verge
29%inclusion10 decks35 decks
18%synergy
Rugged Prairie
29%inclusion10 decks35 decks
14%synergy
Orzhov Basilica
27%inclusion114 decks427 decks
12%synergy
Plateau
26%inclusion9 decks35 decks
14%synergy
Badlands
26%inclusion9 decks35 decks
12%synergy
Silent Clearing
24%inclusion104 decks427 decks
20%synergy
Nurturing Peatland
24%inclusion4 decks17 decks
18%synergy
Murmuring Bosk
24%inclusion4 decks17 decks
17%synergy