Workhorse + Mikaeus, the Unhallowed + Phyrexian Altar

Workhorse
Mikaeus, the Unhallowed
Phyrexian Altar

Requires
Workhorse must be on the battlefield. Mikaeus, the Unhallowed must be on the battlefield. Phyrexian Altar must be on the battlefield.
Steps
  1. Activate Workhorse by removing all +1/+1 counters, adding that many .
  2. Activate Phyrexian Altar by sacrificing Workhorse, adding one mana of any color.
  3. Workhorse undying ability triggers, returning it to the battlefield with an additional +1/+1 counter on it.
  4. Repeat.
Results
Infinite colored mana. Infinite colorless mana. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.

Mikaeus, the Unhallowed
6.96% of 1337 decks 93 decks
Grenzo, Dungeon Warden
0.55% of 3267 decks 18 decks
Marchesa, the Black Rose
0.09% of 9321 decks 8 decks
Imotekh the Stormlord
0.12% of 6538 decks 8 decks
Meren of Clan Nel Toth
0.02% of 14905 decks 3 decks
Ghave, Guru of Spores
0.05% of 6423 decks 3 decks
Tergrid, God of Fright
0.02% of 8997 decks 2 decks
Yawgmoth, Thran Physician
0.04% of 5567 decks 2 decks
Nethroi, Apex of Death
0.04% of 5695 decks 2 decks
Acererak the Archlich
0.18% of 1084 decks 2 decks
Burakos, Party Leader // Haunted One
0.16% of 637 decks 1 decks
Maga, Traitor to Mortals
0.50% of 200 decks 1 decks
Maralen of the Mornsong
0.06% of 1590 decks 1 decks
Gev, Scaled Scorch
0.02% of 4293 decks 1 decks
Gilanra, Caller of Wirewood // Vial Smasher the Fierce
0.21% of 484 decks 1 decks
Toxrill, the Corrosive
0.02% of 5541 decks 1 decks
Totentanz, Swarm Piper
0.04% of 2765 decks 1 decks
Sidisi, Undead Vizier
0.18% of 546 decks 1 decks
New Cards
Funeral Room // Awakening Hall
33% of 9 decks +27% synergy
High Synergy Cards
Ashnod's Altar
94% of 158 decks +87% synergy
Triskelion
72% of 158 decks +71% synergy
Viscera Seer
74% of 158 decks +65% synergy
Walking Ballista
63% of 155 decks +60% synergy
Gavony Township
67% of 6 decks +57% synergy
Cabal Coffers
68% of 158 decks +57% synergy
Blood Artist
68% of 157 decks +56% synergy
Putrid Goblin
55% of 154 decks +55% synergy
Murderous Redcap
55% of 31 decks +53% synergy
Altar of Dementia
55% of 158 decks +52% synergy
Top Cards
Enlightened Tutor
67% of 6 decks +49% synergy
Rhystic Study
67% of 12 decks +39% synergy
Swords to Plowshares
67% of 6 decks +4% synergy
Dark Ritual
66% of 158 decks +44% synergy
Zulaport Cutthroat
59% of 157 decks +49% synergy
Baleful Strix
58% of 12 decks +45% synergy
Carrion Feeder
57% of 158 decks +52% synergy
Eternal Witness
54% of 13 decks +33% synergy
Warren Soultrader
52% of 33 decks +44% synergy
Skullclamp
51% of 158 decks +39% synergy
Creatures
Elas il-Kor, Sadistic Pilgrim
75% of 4 decks +63% synergy
Gray Merchant of Asphodel
50% of 157 decks +41% synergy
River Kelpie
50% of 12 decks +49% synergy
Puppeteer Clique
50% of 158 decks +48% synergy
Reveillark
50% of 6 decks +48% synergy
Good-Fortune Unicorn
50% of 6 decks +47% synergy
Karmic Guide
50% of 6 decks +45% synergy
Sun Titan
50% of 6 decks +39% synergy
Pitiless Plunderer
50% of 155 decks +42% synergy
Gravecrawler
46% of 157 decks +43% synergy
Crypt Ghast
45% of 157 decks +40% synergy
Kiki-Jiki, Mirror Breaker
45% of 31 decks +42% synergy
Tatterkite
44% of 158 decks +44% synergy
Goblin Engineer
43% of 30 decks +40% synergy
Dockside Extortionist
43% of 30 decks +31% synergy
Solemn Simulacrum
42% of 158 decks +28% synergy
Glen Elendra Archmage
42% of 12 decks +39% synergy
Zealous Conscripts
39% of 31 decks +37% synergy
Corpsejack Menace
38% of 13 decks +33% synergy
Sakura-Tribe Elder
38% of 13 decks +20% synergy
Cryptic Trilobite
38% of 152 decks +38% synergy
Pawn of Ulamog
38% of 158 decks +36% synergy
Ayara, First of Locthwain
37% of 154 decks +33% synergy
Orcish Bowmasters
35% of 83 decks +24% synergy
Yawgmoth, Thran Physician
34% of 154 decks +31% synergy
Accursed Marauder
33% of 24 decks +24% synergy
Grim Haruspex
32% of 157 decks +28% synergy
Utopia Mycon
31% of 13 decks +30% synergy
Protean Hulk
31% of 13 decks +29% synergy
Birds of Paradise
31% of 13 decks +4% synergy
Lesser Masticore
31% of 154 decks +30% synergy
Chainbreaker
30% of 158 decks +30% synergy
Plague Belcher
30% of 155 decks +29% synergy
Priest of Urabrask
29% of 31 decks +29% synergy
Flayer of the Hatebound
29% of 31 decks +28% synergy
Judith, the Scourge Diva
29% of 31 decks +27% synergy
Goblin Welder
29% of 31 decks +26% synergy
Imperial Recruiter
29% of 31 decks +23% synergy
Sidisi, Undead Vizier
29% of 157 decks +27% synergy
Lingering Tormentor
28% of 158 decks +28% synergy
Marionette Apprentice
27% of 33 decks +20% synergy
Siege-Gang Commander
26% of 31 decks +24% synergy
Iron Myr
26% of 31 decks +23% synergy
Crystalline Crawler
25% of 155 decks +25% synergy
Sage of Fables
25% of 12 decks +25% synergy
Mulldrifter
25% of 12 decks +19% synergy
Wingrattle Scarecrow
24% of 158 decks +24% synergy
Syr Konrad, the Grim
24% of 154 decks +15% synergy
Acidic Slime
23% of 13 decks +19% synergy
Wood Elves
23% of 13 decks +16% synergy
Instants
Eladamri's Call
50% of 6 decks +39% synergy
Mana Drain
50% of 12 decks +35% synergy
Cyclonic Rift
50% of 12 decks +22% synergy
Counterspell
50% of 12 decks +7% synergy
Path to Exile
50% of 6 decks +5% synergy
Valakut Awakening
48% of 29 decks +42% synergy
Vampiric Tutor
47% of 158 decks +28% synergy
Fierce Guardianship
45% of 11 decks +27% synergy
Chaos Warp
35% of 31 decks +3% synergy
Brainstorm
33% of 12 decks +12% synergy
Culling the Weak
33% of 158 decks +29% synergy
Village Rites
31% of 150 decks +21% synergy
Abrupt Decay
31% of 13 decks +20% synergy
Assassin's Trophy
31% of 13 decks +1% synergy
Cabal Ritual
28% of 158 decks +23% synergy
Defile
27% of 154 decks +23% synergy
Stifle
25% of 12 decks +24% synergy
Swan Song
25% of 12 decks +8% synergy
Entomb
23% of 158 decks +16% synergy
Chord of Calling
23% of 13 decks +17% synergy
Worldly Tutor
23% of 13 decks +9% synergy
Tragic Slip
21% of 157 decks +17% synergy
Fire Prophecy
21% of 29 decks +20% synergy
Deadly Dispute
19% of 148 decks +8% synergy
Corrupted Conviction
19% of 91 decks +13% synergy
Fell the Profane
18% of 33 decks +6% synergy
Deadly Rollick
18% of 152 decks +7% synergy
Deflecting Swat
17% of 29 decks +1% synergy
Pyroblast
16% of 31 decks +10% synergy
Malakir Rebirth
16% of 149 decks +8% synergy
Imp's Mischief
15% of 158 decks +12% synergy
Infernal Grasp
13% of 146 decks +5% synergy
Not Dead After All
13% of 62 decks +9% synergy
Red Elemental Blast
13% of 31 decks +6% synergy
Bedevil
13% of 31 decks -2% synergy
Terminate
13% of 31 decks -8% synergy
Sudden Spoiling
11% of 158 decks +10% synergy
Snuff Out
11% of 158 decks +9% synergy
Bitter Triumph
11% of 46 decks +6% synergy
First Day of Class
10% of 29 decks +10% synergy
Tibalt's Trickery
10% of 29 decks +5% synergy
Go for the Throat
10% of 158 decks +3% synergy
Saw in Half
9% of 121 decks +6% synergy
Flare of Malice
9% of 33 decks +6% synergy
Baleful Mastery
8% of 148 decks +5% synergy
Force of Despair
7% of 154 decks +6% synergy
Dismember
7% of 158 decks +4% synergy
Ad Nauseam
6% of 158 decks +3% synergy
Undying Malice
6% of 146 decks +4% synergy
Supernatural Stamina
6% of 155 decks +4% synergy
Sorceries
Demonic Tutor
55% of 158 decks +33% synergy
Feed the Swarm
46% of 149 decks +27% synergy
Diabolic Intent
45% of 158 decks +36% synergy
Reanimate
42% of 158 decks +27% synergy
Toxic Deluge
33% of 157 decks +16% synergy
Blasphemous Act
32% of 31 decks -1% synergy
Sign in Blood
32% of 158 decks +22% synergy
Damnation
29% of 158 decks +21% synergy
Diabolic Tutor
28% of 158 decks +22% synergy
Grim Tutor
25% of 158 decks +20% synergy
Life from the Loam
23% of 13 decks +19% synergy
Green Sun's Zenith
23% of 13 decks +17% synergy
Three Visits
23% of 13 decks -2% synergy
Nature's Lore
23% of 13 decks -9% synergy
Gamble
23% of 31 decks +13% synergy
Into the Fire
21% of 19 decks +20% synergy
Bubbling Muck
21% of 158 decks +19% synergy
Victimize
21% of 158 decks +9% synergy
Exsanguinate
20% of 158 decks +15% synergy
Imperial Seal
20% of 158 decks +14% synergy
Vandalblast
19% of 31 decks +3% synergy
Night's Whisper
19% of 158 decks +10% synergy
Insatiable Avarice
18% of 38 decks +13% synergy
Beseech the Mirror
16% of 68 decks +12% synergy
Mutilate
16% of 158 decks +14% synergy
Living Death
15% of 158 decks +10% synergy
Beseech the Queen
15% of 158 decks +13% synergy
Buried Alive
15% of 158 decks +9% synergy
Dread Return
14% of 158 decks +9% synergy
Jeska's Will
14% of 29 decks -4% synergy
Read the Bones
13% of 157 decks +5% synergy
Twinflame
13% of 31 decks +10% synergy
Torment of Hailfire
13% of 155 decks +8% synergy
Persist
11% of 148 decks +8% synergy
Sinister Waltz
10% of 29 decks +10% synergy
Unearth
10% of 158 decks +7% synergy
Mark of Mutiny
10% of 31 decks +9% synergy
Profane Tutor
9% of 148 decks +7% synergy
Agadeem's Awakening
9% of 149 decks +6% synergy
Black Sun's Zenith
8% of 158 decks +6% synergy
Peer into the Abyss
7% of 150 decks +4% synergy
Praetor's Grasp
6% of 158 decks +3% synergy
Unmarked Grave
5% of 148 decks +3% synergy
Utility Artifacts
Blasting Station
47% of 158 decks +46% synergy
Jet Medallion
40% of 158 decks +37% synergy
Lightning Greaves
36% of 158 decks +11% synergy
Bolas's Citadel
30% of 155 decks +21% synergy
Altar of the Brood
27% of 157 decks +26% synergy
Sensei's Divining Top
23% of 158 decks +18% synergy
Birthing Pod
23% of 13 decks +21% synergy
The One Ring
20% of 92 decks +11% synergy
Swiftfoot Boots
19% of 158 decks -9% synergy
Bontu's Monument
17% of 155 decks +15% synergy
Cauldron of Souls
17% of 158 decks +17% synergy
Nim Deathmantle
15% of 158 decks +14% synergy
Aetherflux Reservoir
14% of 155 decks +10% synergy
Krark-Clan Ironworks
13% of 158 decks +12% synergy
Expedition Map
11% of 158 decks +8% synergy
Wishclaw Talisman
10% of 154 decks +5% synergy
Wayfarer's Bauble
10% of 158 decks -0% synergy
Desecrated Tomb
10% of 155 decks +9% synergy
Heartstone
9% of 158 decks +9% synergy
Agatha's Soul Cauldron
9% of 68 decks +7% synergy
The Cauldron of Eternity
7% of 154 decks +7% synergy
Spawning Pit
7% of 158 decks +7% synergy
Moonsilver Key
7% of 146 decks +5% synergy
Grinding Station
6% of 158 decks +6% synergy
The Ozolith
6% of 151 decks +2% synergy
Mystic Forge
6% of 154 decks +3% synergy
Reito Lantern
6% of 158 decks +6% synergy
Tel-Jilad Stylus
6% of 158 decks +6% synergy
Mesmeric Orb
6% of 158 decks +4% synergy
Enchantments
Anointed Procession
50% of 6 decks +41% synergy
Aura Shards
50% of 6 decks +41% synergy
Doubling Season
46% of 13 decks +37% synergy
Retribution of the Ancients
39% of 157 decks +38% synergy
Goblin Bombardment
35% of 31 decks +29% synergy
Grave Pact
35% of 158 decks +31% synergy
Phyrexian Arena
35% of 158 decks +20% synergy
Mystic Remora
33% of 12 decks +15% synergy
Hardened Scales
31% of 13 decks +22% synergy
Bastion of Remembrance
29% of 151 decks +23% synergy
Impact Tremors
29% of 31 decks +20% synergy
Heartless Summoning
26% of 158 decks +25% synergy
Branching Evolution
25% of 12 decks +20% synergy
The Meathook Massacre
25% of 146 decks +20% synergy
Black Market Connections
24% of 138 decks +13% synergy
Black Market
23% of 158 decks +19% synergy
Necropotence
23% of 158 decks +18% synergy
Earthcraft
23% of 13 decks +22% synergy
Parallel Lives
23% of 13 decks +16% synergy
Sylvan Library
23% of 13 decks +11% synergy
Dictate of Erebos
20% of 157 decks +16% synergy
Sneak Attack
16% of 31 decks +14% synergy
Animate Dead
16% of 158 decks +6% synergy
Uncivil Unrest
16% of 19 decks +14% synergy
Ripples of Undeath
15% of 26 decks +9% synergy
Braid of Fire
13% of 31 decks +12% synergy
Agent of the Iron Throne
12% of 138 decks +9% synergy
Exquisite Blood
11% of 157 decks +6% synergy
Contamination
11% of 158 decks +11% synergy
Phyrexian Reclamation
11% of 158 decks +8% synergy
Underworld Breach
10% of 30 decks +4% synergy
Mindmoil
10% of 31 decks +9% synergy
Necromancy
8% of 158 decks +5% synergy
Bitterblossom
8% of 158 decks +4% synergy
Sanguine Bond
8% of 158 decks +2% synergy
Greed
8% of 158 decks +5% synergy
Thran Vigil
7% of 108 decks +7% synergy
Attrition
6% of 158 decks +6% synergy
Tortured Existence
6% of 158 decks +5% synergy
Dance of the Dead
6% of 158 decks +4% synergy
Open the Graves
5% of 155 decks +4% synergy
Vampiric Rites
5% of 157 decks +3% synergy
Unspeakable Symbol
5% of 158 decks +4% synergy
Planeswalkers
Liliana, Dreadhorde General
10% of 155 decks +7% synergy
Liliana of the Dark Realms
7% of 157 decks +6% synergy
Utility Lands
Urborg, Tomb of Yawgmoth
57% of 158 decks +47% synergy
Phyrexian Tower
44% of 158 decks +35% synergy
Bojuka Bog
44% of 158 decks +13% synergy
Cabal Stronghold
41% of 155 decks +37% synergy
Nykthos, Shrine to Nyx
31% of 157 decks +26% synergy
Reliquary Tower
31% of 158 decks +2% synergy
Ancient Tomb
25% of 158 decks +14% synergy
Gaea's Cradle
23% of 13 decks +17% synergy
Castle Locthwain
21% of 154 decks +15% synergy
Takenuma, Abandoned Mire
19% of 142 decks +8% synergy
High Market
17% of 158 decks +14% synergy
Urza's Saga
17% of 148 decks +10% synergy
Great Furnace
16% of 31 decks +10% synergy
Spymaster's Vault
15% of 33 decks +11% synergy
Temple of the False God
15% of 158 decks +5% synergy
Witch's Cottage
14% of 154 decks +11% synergy
Inventors' Fair
13% of 155 decks +9% synergy
Crypt of Agadeem
11% of 158 decks +9% synergy
Sokenzan, Crucible of Defiance
10% of 29 decks +5% synergy
Buried Ruin
10% of 158 decks +5% synergy
Command Beacon
9% of 156 decks +4% synergy
Thespian's Stage
9% of 157 decks +6% synergy
Barren Moor
9% of 158 decks +5% synergy
Volrath's Stronghold
8% of 158 decks +7% synergy
Vault of Whispers
8% of 158 decks +4% synergy
War Room
8% of 149 decks +2% synergy
Mortuary Mire
8% of 157 decks +3% synergy
Deserted Temple
7% of 158 decks +6% synergy
Lake of the Dead
6% of 158 decks +5% synergy
Strip Mine
6% of 158 decks +3% synergy
Westvale Abbey
5% of 156 decks +3% synergy
Rogue's Passage
5% of 157 decks -14% synergy
Crystal Vein
5% of 158 decks +4% synergy
Ghost Quarter
5% of 158 decks +3% synergy
Mana Artifacts
Sol Ring
96% of 158 decks +11% synergy
Arcane Signet
64% of 154 decks -8% synergy
Selesnya Signet
50% of 6 decks +41% synergy
Golgari Signet
46% of 13 decks +33% synergy
Talisman of Indulgence
45% of 31 decks +19% synergy
Rakdos Signet
42% of 31 decks +12% synergy
Talisman of Dominance
42% of 12 decks +10% synergy
Dimir Signet
33% of 12 decks +4% synergy
Talisman of Resilience
31% of 13 decks +19% synergy
Mana Crypt
27% of 158 decks +18% synergy
Mind Stone
24% of 158 decks +7% synergy
Jeweled Lotus
23% of 149 decks +17% synergy
Mana Vault
19% of 158 decks +13% synergy
Sceptre of Eternal Glory
17% of 121 decks +16% synergy
Thought Vessel
17% of 156 decks -0% synergy
Charcoal Diamond
14% of 158 decks +9% synergy
Chrome Mox
13% of 158 decks +7% synergy
Fellwar Stone
13% of 158 decks -8% synergy
Caged Sun
13% of 158 decks +10% synergy
Throne of Eldraine
12% of 58 decks +10% synergy
Thran Dynamo
12% of 158 decks +7% synergy
Lotus Petal
12% of 158 decks +5% synergy
Nyx Lotus
10% of 154 decks +8% synergy
Crowded Crypt
10% of 146 decks +8% synergy
Basalt Monolith
8% of 158 decks +6% synergy
Mox Opal
8% of 158 decks +4% synergy
Commander's Sphere
8% of 157 decks -8% synergy
Gilded Lotus
7% of 158 decks +4% synergy
Grim Monolith
6% of 158 decks +4% synergy
Extraplanar Lens
5% of 158 decks +4% synergy
Lands
Temple Garden
100% of 6 decks +59% synergy
Godless Shrine
100% of 6 decks +59% synergy
Stomping Ground
100% of 3 decks +59% synergy
Overgrown Tomb
100% of 13 decks +57% synergy
Blood Crypt
87% of 31 decks +48% synergy
Sulfur Falls
75% of 8 decks +45% synergy
Steam Vents
75% of 8 decks +36% synergy
Watery Grave
75% of 12 decks +34% synergy
Dragonskull Summit
65% of 31 decks +34% synergy
Shivan Reef
62% of 8 decks +36% synergy
Xander's Lounge
57% of 7 decks +29% synergy
Savannah
50% of 6 decks +37% synergy
Scrubland
50% of 6 decks +36% synergy
Bountiful Promenade
50% of 6 decks +26% synergy
Drowned Catacomb
50% of 12 decks +25% synergy
Indatha Triome
50% of 6 decks +19% synergy
Sulfurous Springs
48% of 31 decks +28% synergy
Luxury Suite
48% of 31 decks +22% synergy
Undergrowth Stadium
45% of 11 decks +19% synergy
Stormcarved Coast
43% of 7 decks +25% synergy
Blightstep Pathway
41% of 29 decks +31% synergy
Haunted Ridge
41% of 29 decks +25% synergy
Graven Cairns
39% of 31 decks +31% synergy
Twilight Mire
38% of 13 decks +29% synergy
Bayou
38% of 13 decks +25% synergy
Llanowar Wastes
38% of 13 decks +13% synergy
Woodland Cemetery
38% of 13 decks +11% synergy
Crumbling Necropolis
38% of 8 decks +6% synergy
Shipwreck Marsh
36% of 11 decks +17% synergy
Temple of Malice
35% of 31 decks +21% synergy
Smoldering Marsh
35% of 31 decks +3% synergy
Morphic Pool
33% of 12 decks +7% synergy
Raucous Theater
30% of 10 decks +17% synergy
Command Tower
29% of 158 decks -45% synergy
Canyon Slough
29% of 31 decks +23% synergy
Deathcap Glade
27% of 11 decks +13% synergy
Rakdos Carnarium
26% of 31 decks +11% synergy
Underground River
25% of 12 decks +6% synergy
Tainted Wood
23% of 13 decks +10% synergy
Tainted Peak
23% of 31 decks +13% synergy
Blackcleave Cliffs
19% of 31 decks +14% synergy
Badlands
19% of 31 decks +6% synergy
Foreboding Ruins
19% of 31 decks +4% synergy
Shadowblood Ridge
16% of 31 decks +4% synergy
Myriad Landscape
16% of 157 decks -4% synergy
Mount Doom
16% of 19 decks +8% synergy
Geothermal Bog
14% of 28 decks +11% synergy
Verdant Catacombs
14% of 158 decks +2% synergy
Cavern of Souls
13% of 157 decks +6% synergy
Bloodstained Mire
13% of 158 decks +2% synergy