Eirdu, Carrier of Dawn
Umbral Collar Zealot
Zack Fair

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield (Eirdu as Isilu, Carrier of Twilight on the battlefield and Zack Fair without a -1/-1 counter on it on the battlefield).

   Steps

How does this combo work?
1
Activate Umbral Collar Zealot by sacrificing Zack Fair.
2
When Zack Fair dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to its replacement effect.
3
Resolve the Umbral Collar Zealot ability.
4
Repeat.

   Results

What do I get from this combo?
Infinite ETB
Infinite LTB
Infinite death triggers
Infinite sacrifice triggers
Infinite surveil
Eirdu, Carrier of Dawn
16%inclusion641 decks4.02K decks
Felisa, Fang of Silverquill
0.3%inclusion3 decks944 decks
Ratadrabik of Urborg
0.1%inclusion2 decks2.14K decks
Elas il-Kor, Sadistic Pilgrim
0.1%inclusion2 decks2.96K decks
Tayam, Luminous Enigma
0.0%inclusion1 decks3.28K decks
Kambal, Profiteering Mayor
0.0%inclusion1 decks2.30K decks
Teysa Karlov
0.0%inclusion1 decks7.49K decks
Athreos, God of Passage
0.0%inclusion1 decks3K decks
Celes, Rune Knight
0.0%inclusion1 decks4.78K decks
New Cards
Mighty Mutanimals
2.5%inclusion7 decks275 decks
2%synergy
Shattered Acolyte
2.2%inclusion2 decks90 decks
2%synergy
Continue?
1.8%inclusion5 decks284 decks
0%synergy
South Wind Avatar
1.2%inclusion6 decks500 decks
1%synergy
Sally Pride, Lioness Leader
0.8%inclusion4 decks500 decks
0%synergy
High Synergy Cards
Viscera Seer
90%inclusion586 decks653 decks
82%synergy
Cruel Celebrant
82%inclusion535 decks653 decks
75%synergy
Elas il-Kor, Sadistic Pilgrim
84%inclusion547 decks653 decks
74%synergy
Vizier of Remedies
69%inclusion451 decks653 decks
69%synergy
Marionette Apprentice
69%inclusion450 decks653 decks
64%synergy
Zulaport Cutthroat
72%inclusion471 decks653 decks
64%synergy
Blood Artist
75%inclusion489 decks653 decks
64%synergy
Bastion of Remembrance
70%inclusion454 decks653 decks
63%synergy
Scholar of New Horizons
63%inclusion412 decks653 decks
62%synergy
Geralf's Messenger
61%inclusion401 decks653 decks
61%synergy
Top Cards
Swords to Plowshares
72%inclusion472 decks653 decks
11%synergy
Pitiless Plunderer
69%inclusion450 decks653 decks
60%synergy
Carrion Feeder
62%inclusion407 decks653 decks
58%synergy
Deadly Dispute
62%inclusion404 decks653 decks
50%synergy
Bartolomé del Presidio
61%inclusion398 decks653 decks
57%synergy
Ashnod's Altar
61%inclusion397 decks653 decks
54%synergy
Skullclamp
59%inclusion388 decks653 decks
48%synergy
Butcher Ghoul
59%inclusion385 decks653 decks
59%synergy
Corpse Knight
58%inclusion380 decks653 decks
53%synergy
Luminous Broodmoth
57%inclusion372 decks653 decks
54%synergy
Game Changers
Demonic Tutor
20%inclusion128 decks653 decks
1%synergy
Vampiric Tutor
14%inclusion90 decks653 decks
-1%synergy
Ancient Tomb
8.9%inclusion58 decks653 decks
0%synergy
The One Ring
8.1%inclusion53 decks653 decks
0%synergy
Necropotence
7.8%inclusion51 decks653 decks
3%synergy
Bolas's Citadel
7.8%inclusion51 decks653 decks
0%synergy
Orcish Bowmasters
7.0%inclusion46 decks653 decks
-1%synergy
Mana Vault
5.4%inclusion35 decks653 decks
0%synergy
Imperial Seal
5.1%inclusion33 decks653 decks
0%synergy
Chrome Mox
5.1%inclusion33 decks653 decks
-1%synergy
Creatures
Solemn Simulacrum
57%inclusion372 decks653 decks
45%synergy
Grim Haruspex
56%inclusion365 decks653 decks
53%synergy
Woe Strider
55%inclusion361 decks653 decks
53%synergy
Morbid Opportunist
53%inclusion344 decks653 decks
45%synergy
Mikaeus, the Unhallowed
49%inclusion321 decks653 decks
47%synergy
Gray Merchant of Asphodel
49%inclusion318 decks653 decks
40%synergy
Warren Soultrader
47%inclusion310 decks653 decks
42%synergy
Midnight Reaper
46%inclusion298 decks653 decks
43%synergy
Vengeful Bloodwitch
45%inclusion295 decks653 decks
43%synergy
The Duke, Rebel Sentry
41%inclusion259 decks627 decks
41%synergy
Elenda, the Dusk Rose
36%inclusion235 decks653 decks
31%synergy
Witch Enchanter
35%inclusion229 decks653 decks
28%synergy
Sephiroth, Fabled SOLDIER
35%inclusion228 decks653 decks
33%synergy
Welcoming Vampire
34%inclusion220 decks653 decks
28%synergy
Sun Titan
34%inclusion220 decks653 decks
26%synergy
Accursed Marauder
33%inclusion218 decks653 decks
28%synergy
Syr Konrad, the Grim
33%inclusion217 decks653 decks
25%synergy
Rhys, the Evermore
33%inclusion199 decks599 decks
33%synergy
Junji, the Midnight Sky
33%inclusion214 decks653 decks
30%synergy
Braids, Arisen Nightmare
30%inclusion194 decks653 decks
23%synergy
Yawgmoth, Thran Physician
29%inclusion187 decks653 decks
25%synergy
Lotho, Corrupt Shirriff
26%inclusion170 decks653 decks
13%synergy
Selfless Spirit
25%inclusion162 decks653 decks
20%synergy
Yahenni, Undying Partisan
25%inclusion161 decks653 decks
22%synergy
Triskelion
24%inclusion158 decks653 decks
24%synergy
Syr Vondam, Sunstar Exemplar
24%inclusion155 decks653 decks
22%synergy
Teysa Karlov
23%inclusion152 decks653 decks
19%synergy
Pawn of Ulamog
23%inclusion149 decks653 decks
21%synergy
Voice of Victory
22%inclusion145 decks653 decks
16%synergy
Esper Sentinel
22%inclusion142 decks653 decks
3%synergy
Spirited Companion
20%inclusion131 decks653 decks
16%synergy
Emptiness
18%inclusion120 decks653 decks
18%synergy
Enduring Innocence
18%inclusion117 decks653 decks
14%synergy
Bitterbloom Bearer
17%inclusion112 decks653 decks
15%synergy
Loran of the Third Path
17%inclusion112 decks653 decks
10%synergy
Shriekmaw
17%inclusion108 decks653 decks
14%synergy
Twilight Diviner
16%inclusion95 decks593 decks
14%synergy
Agent Venom
16%inclusion102 decks653 decks
15%synergy
Bloodcrazed Paladin
14%inclusion92 decks653 decks
14%synergy
Grand Abolisher
14%inclusion92 decks653 decks
5%synergy
Wall of Omens
14%inclusion91 decks653 decks
11%synergy
Charismatic Conqueror
14%inclusion91 decks653 decks
11%synergy
Teysa, Orzhov Scion
13%inclusion83 decks653 decks
11%synergy
Boss's Chauffeur
11%inclusion74 decks653 decks
11%synergy
Bone Devourer
11%inclusion70 decks653 decks
10%synergy
Boromir, Warden of the Tower
11%inclusion70 decks653 decks
7%synergy
Boggart Trawler
11%inclusion70 decks653 decks
7%synergy
Karmic Guide
10%inclusion65 decks653 decks
7%synergy
Sifter of Skulls
10%inclusion64 decks653 decks
9%synergy
Ophiomancer
10%inclusion63 decks653 decks
6%synergy
Instants
Path to Exile
57%inclusion372 decks653 decks
10%synergy
Dark Ritual
56%inclusion365 decks653 decks
31%synergy
Village Rites
51%inclusion332 decks653 decks
42%synergy
Anguished Unmaking
40%inclusion261 decks653 decks
15%synergy
Corrupted Conviction
37%inclusion241 decks653 decks
32%synergy
Flare of Fortitude
27%inclusion179 decks653 decks
23%synergy
Despark
27%inclusion179 decks653 decks
14%synergy
Generous Gift
27%inclusion175 decks653 decks
5%synergy
Plumb the Forbidden
26%inclusion169 decks653 decks
23%synergy
Fell the Profane
20%inclusion130 decks653 decks
11%synergy
Duty Beyond Death
18%inclusion115 decks653 decks
16%synergy
Malakir Rebirth
17%inclusion108 decks653 decks
8%synergy
Stroke of Midnight
16%inclusion103 decks653 decks
5%synergy
Deadly Rollick
15%inclusion97 decks653 decks
1%synergy
Inkshield
15%inclusion95 decks653 decks
8%synergy
Fracture
14%inclusion90 decks653 decks
9%synergy
Mortify
13%inclusion82 decks653 decks
2%synergy
Culling the Weak
12%inclusion78 decks653 decks
8%synergy
Teferi's Protection
12%inclusion76 decks653 decks
-5%synergy
Enlightened Tutor
11%inclusion71 decks653 decks
-4%synergy
Silence
10%inclusion66 decks653 decks
4%synergy
Undying Evil
7.8%inclusion51 decks653 decks
7%synergy
Reprieve
7.7%inclusion50 decks653 decks
3%synergy
Flawless Maneuver
7.2%inclusion47 decks653 decks
-3%synergy
Imp's Mischief
7.0%inclusion46 decks653 decks
3%synergy
Saw in Half
6.9%inclusion45 decks653 decks
3%synergy
Flare of Malice
6.6%inclusion43 decks653 decks
4%synergy
Lethal Scheme
6.4%inclusion42 decks653 decks
4%synergy
Cabal Ritual
6.3%inclusion41 decks653 decks
1%synergy
Dawn's Truce
6.1%inclusion40 decks653 decks
-1%synergy
Restoration Magic
5.7%inclusion37 decks653 decks
2%synergy
Clever Concealment
5.4%inclusion35 decks653 decks
1%synergy
Sejiri Shelter
5.2%inclusion34 decks653 decks
2%synergy
Entomb
5.1%inclusion33 decks653 decks
-2%synergy
Sorceries
Victimize
54%inclusion352 decks653 decks
41%synergy
Damn
45%inclusion291 decks653 decks
30%synergy
Reanimate
34%inclusion223 decks653 decks
15%synergy
Diabolic Intent
29%inclusion191 decks653 decks
22%synergy
Night's Whisper
23%inclusion153 decks653 decks
14%synergy
Toxic Deluge
22%inclusion146 decks653 decks
4%synergy
Austere Command
20%inclusion133 decks653 decks
9%synergy
Rite of Oblivion
15%inclusion98 decks653 decks
13%synergy
Dread Return
15%inclusion95 decks653 decks
10%synergy
Blasphemous Edict
15%inclusion95 decks653 decks
9%synergy
Sign in Blood
14%inclusion94 decks653 decks
6%synergy
Sevinne's Reclamation
14%inclusion89 decks653 decks
7%synergy
Feed the Swarm
9.2%inclusion60 decks653 decks
-7%synergy
Living Death
8.9%inclusion58 decks653 decks
4%synergy
Diabolic Tutor
7.4%inclusion48 decks653 decks
2%synergy
Vindicate
7.4%inclusion48 decks653 decks
1%synergy
Agadeem's Awakening
6.9%inclusion45 decks653 decks
4%synergy
Pitiless Carnage
6.1%inclusion40 decks653 decks
6%synergy
Raise the Past
6.1%inclusion40 decks653 decks
5%synergy
Morningtide's Light
5.7%inclusion37 decks653 decks
5%synergy
Grim Tutor
5.7%inclusion37 decks653 decks
2%synergy
Wrath of God
5.4%inclusion35 decks653 decks
1%synergy
Farewell
5.1%inclusion33 decks653 decks
-7%synergy
Utility Artifacts
Phyrexian Altar
40%inclusion259 decks653 decks
36%synergy
Lightning Greaves
36%inclusion232 decks653 decks
11%synergy
Altar of Dementia
31%inclusion203 decks653 decks
29%synergy
Swiftfoot Boots
27%inclusion178 decks653 decks
0%synergy
Blasting Station
27%inclusion177 decks653 decks
27%synergy
Oketra's Monument
14%inclusion89 decks653 decks
12%synergy
Spawning Pit
10%inclusion66 decks653 decks
10%synergy
Wayfarer's Bauble
7.4%inclusion48 decks653 decks
0%synergy
Jet Medallion
6.7%inclusion44 decks653 decks
3%synergy
Pearl Medallion
6.1%inclusion40 decks653 decks
3%synergy
Wishclaw Talisman
5.5%inclusion36 decks653 decks
0%synergy
Enchantments
Cathars' Crusade
52%inclusion342 decks653 decks
47%synergy
Solemnity
46%inclusion303 decks653 decks
45%synergy
Thran Vigil
38%inclusion249 decks653 decks
38%synergy
The Meathook Massacre
27%inclusion179 decks653 decks
22%synergy
Phyrexian Arena
26%inclusion170 decks653 decks
11%synergy
Black Market Connections
21%inclusion140 decks653 decks
9%synergy
Grave Pact
16%inclusion105 decks653 decks
11%synergy
Vampiric Rites
15%inclusion97 decks653 decks
13%synergy
Smothering Tithe
14%inclusion94 decks653 decks
-6%synergy
Bitterblossom
13%inclusion87 decks653 decks
9%synergy
Funeral Room // Awakening Hall
13%inclusion84 decks653 decks
11%synergy
Barrensteppe Siege
12%inclusion80 decks653 decks
10%synergy
Sothera, the Supervoid
12%inclusion78 decks653 decks
11%synergy
Fanatical Devotion
9.0%inclusion59 decks653 decks
8%synergy
Martyr's Cause
8.4%inclusion55 decks653 decks
8%synergy
Grave Venerations
8.0%inclusion48 decks598 decks
6%synergy
Felidar Retreat
7.7%inclusion50 decks653 decks
2%synergy
Animate Dead
7.5%inclusion49 decks653 decks
-1%synergy
Land Tax
7.4%inclusion48 decks653 decks
1%synergy
Dictate of Erebos
6.7%inclusion44 decks653 decks
4%synergy
Skrelv's Hive
6.4%inclusion42 decks653 decks
5%synergy
Trouble in Pairs
5.5%inclusion36 decks653 decks
1%synergy
Blind Obedience
5.4%inclusion35 decks653 decks
-1%synergy
Planeswalkers
Liliana, Dreadhorde General
11%inclusion72 decks653 decks
7%synergy
Utility Lands
Bojuka Bog
41%inclusion270 decks653 decks
12%synergy
High Market
37%inclusion243 decks653 decks
35%synergy
Phyrexian Tower
34%inclusion222 decks653 decks
25%synergy
Vault of the Archangel
23%inclusion148 decks653 decks
11%synergy
Abandoned Air Temple
20%inclusion128 decks627 decks
16%synergy
Reliquary Tower
20%inclusion131 decks653 decks
-10%synergy
Urborg, Tomb of Yawgmoth
18%inclusion115 decks653 decks
9%synergy
Susur Secundi, Void Altar
16%inclusion107 decks653 decks
14%synergy
Midgar, City of Mako
16%inclusion104 decks653 decks
12%synergy
Nesting Grounds
15%inclusion101 decks653 decks
13%synergy
Takenuma, Abandoned Mire
14%inclusion94 decks653 decks
6%synergy
Spymaster's Vault
9.5%inclusion62 decks653 decks
7%synergy
Eiganjo, Seat of the Empire
9.2%inclusion60 decks653 decks
2%synergy
Command Beacon
8.6%inclusion56 decks653 decks
4%synergy
Westvale Abbey
7.7%inclusion50 decks653 decks
5%synergy
Cabal Coffers
7.4%inclusion48 decks653 decks
-2%synergy
Urza's Saga
7.2%inclusion47 decks653 decks
0%synergy
Restless Fortress
6.3%inclusion41 decks653 decks
5%synergy
Mana Artifacts
Sol Ring
91%inclusion594 decks653 decks
7%synergy
Arcane Signet
90%inclusion589 decks653 decks
18%synergy
Talisman of Hierarchy
71%inclusion463 decks653 decks
45%synergy
Orzhov Signet
64%inclusion421 decks653 decks
42%synergy
Fellwar Stone
30%inclusion199 decks653 decks
10%synergy
Mind Stone
22%inclusion144 decks653 decks
8%synergy
Thought Vessel
16%inclusion103 decks653 decks
-2%synergy
The Soul Stone
11%inclusion73 decks653 decks
7%synergy
Lotus Petal
7.2%inclusion47 decks653 decks
0%synergy
Crowded Crypt
6.9%inclusion45 decks653 decks
6%synergy
Commander's Sphere
6.4%inclusion42 decks653 decks
-5%synergy
Lands
Command Tower
92%inclusion600 decks653 decks
18%synergy
Isolated Chapel
78%inclusion509 decks653 decks
44%synergy
Caves of Koilos
73%inclusion476 decks653 decks
44%synergy
Godless Shrine
62%inclusion402 decks653 decks
20%synergy
Fetid Heath
61%inclusion400 decks653 decks
48%synergy
Tainted Field
59%inclusion387 decks653 decks
47%synergy
Shattered Sanctum
50%inclusion324 decks653 decks
34%synergy
Shineshadow Snarl
47%inclusion305 decks653 decks
34%synergy
Vault of Champions
41%inclusion269 decks653 decks
18%synergy
Bleachbone Verge
40%inclusion259 decks653 decks
31%synergy
Marsh Flats
34%inclusion224 decks653 decks
24%synergy
Exotic Orchard
34%inclusion223 decks653 decks
-2%synergy
Temple of Silence
33%inclusion215 decks653 decks
16%synergy
Brightclimb Pathway
33%inclusion214 decks653 decks
25%synergy
Orzhov Basilica
33%inclusion213 decks653 decks
19%synergy
Shadowy Backstreet
31%inclusion200 decks653 decks
20%synergy
Desolate Mire
30%inclusion195 decks653 decks
23%synergy
Concealed Courtyard
20%inclusion133 decks653 decks
15%synergy
Silent Clearing
19%inclusion121 decks653 decks
14%synergy
Evolving Wilds
16%inclusion107 decks653 decks
-4%synergy
Scrubland
14%inclusion89 decks653 decks
0%synergy
Scoured Barrens
12%inclusion80 decks653 decks
4%synergy
Sunlit Marsh
11%inclusion73 decks653 decks
7%synergy
Myriad Landscape
11%inclusion69 decks653 decks
-5%synergy
Fabled Passage
10%inclusion67 decks653 decks
1%synergy
Terramorphic Expanse
10%inclusion64 decks653 decks
-5%synergy
Flooded Strand
9.3%inclusion61 decks653 decks
-2%synergy
Polluted Delta
9.3%inclusion61 decks653 decks
-3%synergy
Bloodstained Mire
8.9%inclusion58 decks653 decks
-2%synergy
Arid Mesa
8.3%inclusion54 decks653 decks
-2%synergy
Verdant Catacombs
7.0%inclusion46 decks653 decks
-4%synergy
Path of Ancestry
6.9%inclusion45 decks653 decks
-15%synergy
Windswept Heath
6.6%inclusion43 decks653 decks
-4%synergy
City of Brass
6.4%inclusion42 decks653 decks
-1%synergy
Prismatic Vista
6.1%inclusion40 decks653 decks
1%synergy
Demolition Field
5.5%inclusion36 decks653 decks
2%synergy
Snowfield Sinkhole
5.2%inclusion34 decks653 decks
3%synergy
Orzhov Guildgate
5.2%inclusion34 decks653 decks
1%synergy
Mana Confluence
5.2%inclusion34 decks653 decks
-2%synergy
Lazotep Quarry
5.1%inclusion33 decks653 decks
4%synergy