River Kelpie + Mikaeus, the Unhallowed + Phyrexian Altar

River Kelpie
Mikaeus, the Unhallowed
Phyrexian Altar

Requires
River Kelpie must be on the battlefield. Mikaeus, the Unhallowed must be on the battlefield. Phyrexian Altar must be on the battlefield.
Steps
  1. Activate Phyrexian Altar by sacrificing River Kelpie, adding 1.
  2. River Kelpie's persist and undying abilities trigger.
  3. Resolve the persist trigger, returning River Kelpie from your graveyard to the battlefield with a -1/-1 counter on it.
  4. River Kelpie enters the battlefield, causing you to draw.
  5. The undying trigger fails to resolve because River Kelpie is not in your graveyard.
  6. Activate Phyrexian Altar by sacrificing River Kelpie, adding 1.
  7. River Kelpie's undying and persist abilities trigger.
  8. Resolve the undying trigger, returning River Kelpie from your graveyard to the battlefield with a +1/+1 counter on it.
  9. River Kelpie enters the battlefield, causing you to draw a card.
  10. The persist trigger fails to resolve because River Kelpie is not in your graveyard.
  11. Repeat.
Results
Infinite card draw. Near-infinite colored mana. Near-infinite death triggers. Near-infinite ETB. Near-infinite LTB. Near-infinite sacrifice triggers.

Marchesa, the Black Rose
6.93% of 9321 decks 646 decks
Muldrotha, the Gravetide
0.76% of 15112 decks 115 decks
Wilhelt, the Rotcleaver
0.08% of 18970 decks 16 decks
Zur the Enchanter
0.14% of 11095 decks 16 decks
Missy
0.84% of 1781 decks 15 decks
Bane, Lord of Darkness
0.24% of 2087 decks 5 decks
The Scarab God
0.04% of 10352 decks 4 decks
Kenrith, the Returned King
0.02% of 21513 decks 4 decks
Sefris of the Hidden Ways
0.03% of 8722 decks 3 decks
Gisa and Geralf
0.06% of 4645 decks 3 decks
Talion, the Kindly Lord
0.03% of 6478 decks 2 decks
The Mimeoplasm
0.03% of 5780 decks 2 decks
Sidisi, Brood Tyrant
0.03% of 6243 decks 2 decks
Satoru, the Infiltrator
0.16% of 1256 decks 2 decks
Nevinyrral, Urborg Tyrant
0.13% of 1536 decks 2 decks
The Master, Formed Anew
0.46% of 438 decks 2 decks
Thrasios, Triton Hero // Tormod, the Desecrator
0.90% of 222 decks 2 decks
Grimgrin, Corpse-Born
0.10% of 2083 decks 2 decks
New Cards
Alesha, Who Laughs at Fate
58% of 12 decks +43% synergy
Into the Pit
50% of 48 decks +43% synergy
Blasphemous Edict
50% of 14 decks +16% synergy
Gleeful Arsonist
49% of 43 decks +37% synergy
Withering Torment
44% of 63 decks +23% synergy
High Synergy Cards
Flayer of the Hatebound
81% of 675 decks +81% synergy
Uncivil Unrest
79% of 497 decks +78% synergy
Ashnod's Altar
79% of 876 decks +71% synergy
Goblin Bombardment
74% of 675 decks +68% synergy
Unspeakable Symbol
67% of 876 decks +67% synergy
Gev, Scaled Scorch
66% of 104 decks +65% synergy
Glen Elendra Archmage
66% of 876 decks +63% synergy
Luminous Broodmoth
65% of 40 decks +63% synergy
Solemnity
63% of 41 decks +63% synergy
Kitchen Finks
62% of 8 decks +62% synergy
Top Cards
Blasphemous Act
71% of 675 decks +37% synergy
Eternal Witness
70% of 135 decks +49% synergy
Carrion Feeder
65% of 876 decks +60% synergy
Viscera Seer
64% of 876 decks +55% synergy
Baleful Strix
62% of 876 decks +48% synergy
Solemn Simulacrum
61% of 876 decks +47% synergy
Spore Frog
61% of 135 decks +58% synergy
Grim Haruspex
59% of 876 decks +54% synergy
Sneak Attack
58% of 675 decks +55% synergy
Sakura-Tribe Elder
57% of 135 decks +38% synergy
Creatures
Warren Soultrader
57% of 218 decks +49% synergy
Haywire Mite
54% of 113 decks +50% synergy
Yahenni, Undying Partisan
52% of 875 decks +49% synergy
Iron Apprentice
52% of 844 decks +51% synergy
Heartmender
50% of 8 decks +50% synergy
Grumgully, the Generous
50% of 6 decks +48% synergy
Good-Fortune Unicorn
50% of 8 decks +47% synergy
Satoru, the Infiltrator
49% of 255 decks +46% synergy
Scorn-Blade Berserker
48% of 600 decks +48% synergy
Drana, Liberator of Malakir
48% of 875 decks +46% synergy
Mahadi, Emporium Master
48% of 638 decks +41% synergy
Underrealm Lich
47% of 135 decks +43% synergy
Birds of Paradise
47% of 135 decks +20% synergy
Herald of Secret Streams
46% of 875 decks +43% synergy
Danny Pink
46% of 431 decks +45% synergy
Doc Aurlock, Grizzled Genius
46% of 35 decks +40% synergy
Spark Double
44% of 874 decks +37% synergy
High-Society Hunter
43% of 14 decks +36% synergy
Juri, Master of the Revue
43% of 666 decks +39% synergy
Insidious Fungus
42% of 12 decks +36% synergy
Dockside Extortionist
41% of 672 decks +28% synergy
Accursed Marauder
41% of 171 decks +32% synergy
Pollywog Prodigy
41% of 103 decks +28% synergy
The Gitrog Monster
41% of 135 decks +35% synergy
Braids, Arisen Nightmare
40% of 802 decks +32% synergy
Hermit Druid
40% of 135 decks +39% synergy
Thundering Raiju
40% of 653 decks +38% synergy
Puppeteer Clique
39% of 876 decks +37% synergy
Zealous Conscripts
39% of 675 decks +37% synergy
Safehold Elite
38% of 8 decks +37% synergy
Sage of Fables
36% of 876 decks +36% synergy
Esper Sentinel
35% of 40 decks +14% synergy
Yawgmoth, Thran Physician
35% of 874 decks +31% synergy
World Shaper
33% of 135 decks +30% synergy
Mulldrifter
33% of 876 decks +27% synergy
Uro, Titan of Nature's Wrath
33% of 135 decks +28% synergy
Bloodtracker
31% of 875 decks +31% synergy
Cankerbloom
31% of 94 decks +24% synergy
Gisa, Glorious Resurrector
31% of 854 decks +29% synergy
Dauthi Voidwalker
30% of 861 decks +22% synergy
Fiend Artisan
28% of 135 decks +26% synergy
Aftermath Analyst
27% of 44 decks +23% synergy
Marionette Apprentice
27% of 218 decks +19% synergy
Imperial Recruiter
27% of 675 decks +21% synergy
Delighted Halfling
26% of 78 decks +11% synergy
Gray Merchant of Asphodel
25% of 876 decks +16% synergy
Voldaren Thrillseeker
25% of 502 decks +25% synergy
Springbloom Druid
24% of 135 decks +20% synergy
Ramunap Excavator
24% of 135 decks +18% synergy
Kithkin Spellduster
24% of 41 decks +24% synergy
Instants
Chaos Warp
52% of 675 decks +19% synergy
Cyclonic Rift
49% of 876 decks +21% synergy
Swords to Plowshares
46% of 41 decks -16% synergy
Counterspell
46% of 876 decks +3% synergy
Enlightened Tutor
41% of 41 decks +24% synergy
Path to Exile
37% of 41 decks -9% synergy
Assassin's Trophy
33% of 135 decks +3% synergy
Vampiric Tutor
30% of 876 decks +12% synergy
Fierce Guardianship
29% of 868 decks +11% synergy
Mana Drain
26% of 876 decks +11% synergy
Terminate
26% of 675 decks +5% synergy
Village Rites
26% of 866 decks +16% synergy
Dovin's Veto
24% of 41 decks +5% synergy
Teferi's Protection
22% of 41 decks +2% synergy
Arcane Denial
21% of 876 decks +1% synergy
Swan Song
20% of 876 decks +4% synergy
Deadly Dispute
19% of 859 decks +8% synergy
Deflecting Swat
19% of 668 decks +2% synergy
Crop Rotation
18% of 135 decks +8% synergy
Deadly Rollick
16% of 868 decks +5% synergy
Void Rend
15% of 39 decks +1% synergy
An Offer You Can't Refuse
15% of 838 decks -5% synergy
Negate
15% of 876 decks -8% synergy
Heroic Intervention
15% of 135 decks -15% synergy
Silence
15% of 41 decks +8% synergy
Despark
15% of 41 decks -1% synergy
Beast Within
13% of 135 decks -26% synergy
Act of Aggression
12% of 675 decks +12% synergy
Entomb
12% of 876 decks +5% synergy
Plumb the Forbidden
12% of 861 decks +9% synergy
Flare of Denial
12% of 224 decks +8% synergy
Fell the Profane
11% of 218 decks -0% synergy
Bedevil
11% of 673 decks -3% synergy
Worldly Tutor
11% of 135 decks -3% synergy
Dark Ritual
11% of 876 decks -11% synergy
Feign Death
11% of 859 decks +9% synergy
Malakir Rebirth
10% of 865 decks +2% synergy
Anguished Unmaking
10% of 41 decks -14% synergy
Generous Gift
10% of 41 decks -16% synergy
Sink into Stupor
10% of 218 decks -4% synergy
First Day of Class
8% of 662 decks +8% synergy
Rakdos Charm
8% of 675 decks -6% synergy
Slip Out the Back
8% of 838 decks +5% synergy
Flawless Maneuver
8% of 40 decks -2% synergy
Flare of Malice
7% of 220 decks +4% synergy
Lethal Scheme
7% of 838 decks +6% synergy
Harrow
7% of 135 decks -3% synergy
Force of Will
7% of 876 decks -5% synergy
Reality Shift
6% of 876 decks -3% synergy
Domineering Will
6% of 876 decks +6% synergy
Sorceries
Toxic Deluge
46% of 876 decks +28% synergy
Mark of Mutiny
44% of 675 decks +44% synergy
Demonic Tutor
39% of 876 decks +16% synergy
Life from the Loam
37% of 135 decks +33% synergy
Feed the Swarm
36% of 865 decks +18% synergy
Vandalblast
35% of 675 decks +18% synergy
Damnation
32% of 876 decks +24% synergy
Mob Rule
29% of 675 decks +27% synergy
Diabolic Intent
28% of 876 decks +19% synergy
Victimize
23% of 876 decks +11% synergy
Reanimate
23% of 876 decks +7% synergy
Damn
18% of 40 decks +1% synergy
Idyllic Tutor
17% of 41 decks +12% synergy
Mass Mutiny
17% of 675 decks +17% synergy
Insurrection
16% of 675 decks +15% synergy
Living Death
16% of 876 decks +11% synergy
Farseek
16% of 135 decks -19% synergy
Wave Goodbye
15% of 355 decks +12% synergy
Three Visits
15% of 135 decks -10% synergy
Nature's Lore
15% of 135 decks -17% synergy
Seize the Spotlight
13% of 649 decks +11% synergy
Cultivate
13% of 135 decks -34% synergy
Wrath of God
12% of 41 decks +6% synergy
Jeska's Will
11% of 666 decks -7% synergy
Kodama's Reach
10% of 135 decks -21% synergy
Squirming Emergence
10% of 59 decks +7% synergy
Resurgent Belief
10% of 40 decks +8% synergy
Replenish
10% of 41 decks +9% synergy
Fractured Identity
10% of 41 decks +8% synergy
Sevinne's Reclamation
10% of 41 decks +3% synergy
Supreme Verdict
10% of 41 decks -4% synergy
Bala Ged Recovery
10% of 134 decks +1% synergy
Act of Treason
9% of 675 decks +8% synergy
Kari Zev's Expertise
9% of 674 decks +8% synergy
Culling Ritual
9% of 134 decks -2% synergy
Agadeem's Awakening
8% of 865 decks +4% synergy
Buried Alive
8% of 876 decks +2% synergy
Farewell
8% of 39 decks -6% synergy
Furnace Reins
7% of 502 decks +6% synergy
Grim Tutor
7% of 876 decks +2% synergy
Windfall
7% of 876 decks -6% synergy
Rampant Growth
7% of 135 decks -28% synergy
Last One Standing
6% of 674 decks +5% synergy
Harness by Force
6% of 675 decks +6% synergy
Slave of Bolas
6% of 675 decks +5% synergy
Faithless Looting
6% of 675 decks -11% synergy
Vengeful Possession
6% of 54 decks +4% synergy
Utility Artifacts
Lightning Greaves
52% of 876 decks +26% synergy
The Ozolith
45% of 868 decks +41% synergy
Skullclamp
44% of 876 decks +32% synergy
Altar of Dementia
37% of 876 decks +34% synergy
Andúril, Narsil Reforged
30% of 445 decks +29% synergy
Swiftfoot Boots
28% of 876 decks +1% synergy
Birthing Pod
26% of 135 decks +23% synergy
Agatha's Soul Cauldron
25% of 479 decks +23% synergy
Conduit of Worlds
14% of 102 decks +7% synergy
The Great Henge
12% of 135 decks +2% synergy
Bolas's Citadel
9% of 874 decks +0% synergy
The One Ring
8% of 631 decks -1% synergy
Wayfarer's Bauble
8% of 876 decks -2% synergy
Cauldron of Souls
5% of 876 decks +5% synergy
Mesmeric Orb
5% of 876 decks +4% synergy
Enchantments
Thran Vigil
55% of 750 decks +55% synergy
Pernicious Deed
54% of 135 decks +52% synergy
Seal of Primordium
52% of 135 decks +50% synergy
Rhythm of the Wild
50% of 6 decks +27% synergy
Rhystic Study
47% of 876 decks +19% synergy
Phyrexian Unlife
44% of 41 decks +43% synergy
Trouble in Pairs
43% of 14 decks +36% synergy
Smothering Tithe
37% of 41 decks +12% synergy
Nine Lives
35% of 40 decks +35% synergy
Delaying Shield
34% of 41 decks +34% synergy
Dictate of Erebos
29% of 876 decks +25% synergy
Exploration
27% of 135 decks +19% synergy
Greater Auramancy
24% of 41 decks +23% synergy
Grave Pact
23% of 876 decks +18% synergy
Sylvan Library
21% of 135 decks +10% synergy
Mystic Remora
21% of 876 decks +3% synergy
Grave Betrayal
20% of 876 decks +19% synergy
Defense of the Heart
18% of 135 decks +15% synergy
Animate Dead
18% of 876 decks +8% synergy
Feast on the Fallen
17% of 876 decks +17% synergy
Ghostly Prison
17% of 41 decks +5% synergy
Greater Good
16% of 135 decks +11% synergy
Insidious Roots
16% of 43 decks +8% synergy
Black Market Connections
16% of 823 decks +5% synergy
Phyrexian Arena
15% of 876 decks +0% synergy
Survival of the Fittest
13% of 135 decks +12% synergy
Kenrith's Transformation
13% of 135 decks +7% synergy
Kaya's Ghostform
12% of 874 decks +8% synergy
Inner Sanctum
12% of 41 decks +12% synergy
Celestial Convergence
12% of 41 decks +12% synergy
Journey to Eternity
12% of 135 decks +9% synergy
All Will Be One
12% of 523 decks +8% synergy
The Meathook Massacre
11% of 854 decks +6% synergy
Pattern of Rebirth
11% of 135 decks +10% synergy
Elephant Grass
10% of 135 decks +10% synergy
Warstorm Surge
10% of 675 decks +5% synergy
Phyrexian Reclamation
10% of 876 decks +7% synergy
Necropotence
10% of 876 decks +5% synergy
Force Bubble
10% of 41 decks +10% synergy
Aura of Silence
10% of 41 decks +7% synergy
Grasp of Fate
10% of 41 decks +7% synergy
Cathars' Crusade
10% of 41 decks +4% synergy
Darksteel Mutation
10% of 41 decks +4% synergy
Land Tax
10% of 41 decks +3% synergy
Black Market
10% of 876 decks +5% synergy
Wild Growth
10% of 135 decks -1% synergy
Carpet of Flowers
9% of 135 decks +5% synergy
Attrition
8% of 876 decks +7% synergy
Martyr's Cause
7% of 41 decks +7% synergy
Enchanted Evening
7% of 41 decks +6% synergy
Planeswalkers
Oko, Thief of Crowns
26% of 135 decks +20% synergy
Tamiyo, Collector of Tales
16% of 135 decks +15% synergy
Wrenn and Realmbreaker
14% of 86 decks +12% synergy
Geyadrone Dihada
13% of 662 decks +11% synergy
Liliana, Dreadhorde General
8% of 874 decks +5% synergy
Ashiok, Dream Render
7% of 874 decks +3% synergy
Grist, the Hunger Tide
6% of 134 decks +2% synergy
Utility Lands
Phyrexian Tower
57% of 876 decks +49% synergy
High Market
43% of 876 decks +40% synergy
Urborg, Tomb of Yawgmoth
43% of 876 decks +33% synergy
Boseiju, Who Endures
38% of 130 decks +19% synergy
Bojuka Bog
35% of 876 decks +5% synergy
Forge of Heroes
34% of 875 decks +34% synergy
Reliquary Tower
32% of 876 decks +2% synergy
Shifting Woodland
31% of 29 decks +21% synergy
Ancient Tomb
22% of 876 decks +12% synergy
Hall of Heliod's Generosity
22% of 41 decks +15% synergy
Spymaster's Vault
19% of 218 decks +15% synergy
Otawara, Soaring City
16% of 844 decks -1% synergy
The Black Gate
15% of 511 decks +11% synergy
Cabal Coffers
14% of 876 decks +3% synergy
Takenuma, Abandoned Mire
12% of 844 decks +2% synergy
Tyrite Sanctum
12% of 863 decks +10% synergy
Drannith Ruins
11% of 563 decks +10% synergy
Command Beacon
11% of 875 decks +6% synergy
Urza's Saga
11% of 861 decks +4% synergy
Nesting Grounds
11% of 868 decks +9% synergy
Strip Mine
9% of 876 decks +6% synergy
Field of the Dead
8% of 874 decks +4% synergy
Serra's Sanctum
7% of 41 decks +6% synergy
Rogue's Passage
7% of 876 decks -12% synergy
Gaea's Cradle
7% of 135 decks +1% synergy
Yavimaya, Cradle of Growth
6% of 861 decks -3% synergy
Temple of the False God
6% of 876 decks -4% synergy
Castle Locthwain
5% of 871 decks +0% synergy
Karn's Bastion
5% of 874 decks -0% synergy
Mana Artifacts
Sol Ring
94% of 876 decks +10% synergy
Arcane Signet
86% of 871 decks +14% synergy
Talisman of Indulgence
61% of 675 decks +35% synergy
Talisman of Creativity
57% of 673 decks +28% synergy
Talisman of Dominance
56% of 876 decks +25% synergy
Rakdos Signet
45% of 675 decks +15% synergy
Dimir Signet
39% of 876 decks +9% synergy
Talisman of Progress
37% of 41 decks +14% synergy
Izzet Signet
35% of 675 decks +6% synergy
Talisman of Hierarchy
34% of 41 decks +10% synergy
Azorius Signet
29% of 41 decks +3% synergy
Fellwar Stone
29% of 876 decks +8% synergy
Orzhov Signet
27% of 41 decks -0% synergy
Chromatic Lantern
16% of 876 decks +7% synergy
Relic of Sauron
16% of 408 decks +4% synergy
Mana Crypt
15% of 876 decks +6% synergy
Lotus Petal
12% of 876 decks +5% synergy
Golgari Signet
11% of 135 decks -2% synergy
Commander's Sphere
10% of 876 decks -5% synergy
Thought Vessel
10% of 875 decks -7% synergy
Talisman of Resilience
10% of 135 decks -2% synergy
Simic Signet
10% of 135 decks -5% synergy
Talisman of Curiosity
8% of 135 decks -4% synergy
Jeweled Lotus
8% of 865 decks +1% synergy
Mind Stone
7% of 876 decks -11% synergy
Mana Vault
5% of 876 decks -1% synergy
Lands
Command Tower
93% of 876 decks +19% synergy
Overgrown Tomb
82% of 135 decks +40% synergy
Breeding Pool
81% of 135 decks +40% synergy
Watery Grave
80% of 876 decks +39% synergy
Steam Vents
80% of 675 decks +41% synergy
Blood Crypt
78% of 675 decks +40% synergy
Godless Shrine
76% of 41 decks +35% synergy
Hallowed Fountain
76% of 41 decks +35% synergy
Zagoth Triome
72% of 135 decks +41% synergy
Xander's Lounge
70% of 649 decks +43% synergy
Training Center
57% of 666 decks +30% synergy
Luxury Suite
57% of 674 decks +31% synergy
Polluted Delta
56% of 876 decks +45% synergy
Raffine's Tower
54% of 39 decks +26% synergy
Shivan Reef
54% of 675 decks +27% synergy
Exotic Orchard
54% of 876 decks +18% synergy
Dragonskull Summit
53% of 675 decks +22% synergy
Morphic Pool
53% of 875 decks +26% synergy
Vault of Champions
50% of 40 decks +24% synergy
Temple Garden
50% of 8 decks +9% synergy
Stomping Ground
50% of 6 decks +9% synergy
Sea of Clouds
49% of 41 decks +23% synergy
Sulfurous Springs
49% of 675 decks +29% synergy
Undergrowth Stadium
49% of 134 decks +22% synergy
Drowned Catacomb
48% of 876 decks +23% synergy
Rejuvenating Springs
48% of 134 decks +19% synergy
Bloodstained Mire
46% of 876 decks +36% synergy
Crumbling Necropolis
46% of 675 decks +15% synergy
Sulfur Falls
45% of 675 decks +15% synergy
Scalding Tarn
44% of 876 decks +33% synergy
Underground River
44% of 876 decks +25% synergy
Underground Mortuary
44% of 50 decks +27% synergy
Tundra
39% of 41 decks +25% synergy
Hedge Maze
38% of 50 decks +24% synergy
Scrubland
37% of 41 decks +23% synergy
Woodland Cemetery
35% of 135 decks +7% synergy
Hinterland Harbor
33% of 135 decks +6% synergy
Opal Palace
33% of 876 decks +30% synergy
Sunken Hollow
29% of 875 decks -6% synergy
Deserted Beach
28% of 40 decks +11% synergy
Arcane Sanctum
27% of 41 decks -1% synergy
Opulent Palace
27% of 135 decks +0% synergy
Smoldering Marsh
27% of 674 decks -6% synergy
Shipwreck Marsh
26% of 854 decks +7% synergy
City of Brass
26% of 876 decks +18% synergy
Bayou
25% of 135 decks +12% synergy
Llanowar Wastes
25% of 135 decks -0% synergy
Haunted Ridge
25% of 657 decks +9% synergy
Stormcarved Coast
25% of 655 decks +7% synergy
Tropical Island
24% of 135 decks +10% synergy