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
6.82% of 9547 decks 651 decks
Muldrotha, the Gravetide
0.78% of 15793 decks 123 decks
Wilhelt, the Rotcleaver
0.08% of 18986 decks 16 decks
Zur the Enchanter
0.14% of 11256 decks 16 decks
Missy
0.79% of 1898 decks 15 decks
Kenrith, the Returned King
0.02% of 21933 decks 5 decks
The Scarab God
0.04% of 10527 decks 4 decks
Bane, Lord of Darkness
0.19% of 2131 decks 4 decks
Sefris of the Hidden Ways
0.03% of 8773 decks 3 decks
Thraximundar
0.15% of 1955 decks 3 decks
Gisa and Geralf
0.06% of 4799 decks 3 decks
The Mimeoplasm
0.03% of 5865 decks 2 decks
Talion, the Kindly Lord
0.03% of 6921 decks 2 decks
Sedris, the Traitor King
0.11% of 1873 decks 2 decks
Varina, Lich Queen
0.03% of 7141 decks 2 decks
The Wise Mothman
0.01% of 13690 decks 2 decks
Nevinyrral, Urborg Tyrant
0.13% of 1549 decks 2 decks
Sidisi, Brood Tyrant
0.03% of 6406 decks 2 decks
New Cards
Alesha, Who Laughs at Fate
67% of 45 decks +51% synergy
Blasphemous Edict
59% of 51 decks +25% synergy
High-Society Hunter
51% of 51 decks +46% synergy
Withering Torment
48% of 109 decks +29% synergy
Insidious Fungus
44% of 18 decks +39% synergy
High Synergy Cards
Flayer of the Hatebound
82% of 682 decks +81% synergy
Uncivil Unrest
80% of 534 decks +78% synergy
Kitchen Finks
75% of 8 decks +75% synergy
Ashnod's Altar
80% of 890 decks +72% synergy
Goblin Bombardment
75% of 682 decks +69% synergy
Gev, Scaled Scorch
70% of 141 decks +69% synergy
Unspeakable Symbol
67% of 890 decks +66% synergy
Luminous Broodmoth
66% of 41 decks +64% synergy
Glen Elendra Archmage
66% of 890 decks +63% synergy
Heartmender
62% of 8 decks +62% synergy
Top Cards
Blasphemous Act
72% of 682 decks +39% synergy
Eternal Witness
67% of 143 decks +47% synergy
Carrion Feeder
65% of 890 decks +60% synergy
Viscera Seer
64% of 890 decks +55% synergy
Solemnity
62% of 42 decks +61% synergy
Baleful Strix
61% of 890 decks +48% synergy
Spore Frog
61% of 143 decks +58% synergy
Solemn Simulacrum
61% of 890 decks +47% synergy
Grim Haruspex
59% of 890 decks +55% synergy
Warren Soultrader
59% of 270 decks +51% synergy
Creatures
Grumgully, the Generous
57% of 7 decks +55% synergy
Sakura-Tribe Elder
57% of 143 decks +38% synergy
Haywire Mite
54% of 125 decks +50% synergy
Iron Apprentice
52% of 863 decks +52% synergy
Yahenni, Undying Partisan
52% of 889 decks +49% synergy
Good-Fortune Unicorn
50% of 8 decks +47% synergy
Satoru, the Infiltrator
49% of 309 decks +46% synergy
Scorn-Blade Berserker
48% of 653 decks +48% synergy
Drana, Liberator of Malakir
48% of 889 decks +45% synergy
Mahadi, Emporium Master
47% of 651 decks +41% synergy
Birds of Paradise
47% of 143 decks +20% synergy
Danny Pink
46% of 483 decks +45% synergy
Herald of Secret Streams
46% of 889 decks +44% synergy
Underrealm Lich
45% of 143 decks +42% synergy
Gleeful Arsonist
45% of 80 decks +38% synergy
Spark Double
45% of 888 decks +38% synergy
Juri, Master of the Revue
43% of 675 decks +39% synergy
Doc Aurlock, Grizzled Genius
40% of 50 decks +35% synergy
Thundering Raiju
40% of 663 decks +39% synergy
Hermit Druid
40% of 143 decks +39% synergy
The Gitrog Monster
40% of 143 decks +35% synergy
Braids, Arisen Nightmare
40% of 832 decks +32% synergy
Accursed Marauder
40% of 225 decks +31% synergy
Puppeteer Clique
38% of 890 decks +37% synergy
Safehold Elite
38% of 8 decks +37% synergy
Dockside Extortionist
37% of 679 decks +26% synergy
Sage of Fables
37% of 890 decks +36% synergy
Zealous Conscripts
36% of 682 decks +34% synergy
Yawgmoth, Thran Physician
36% of 888 decks +32% synergy
Pollywog Prodigy
35% of 156 decks +24% synergy
World Shaper
34% of 143 decks +31% synergy
Esper Sentinel
34% of 41 decks +14% synergy
Mulldrifter
32% of 890 decks +26% synergy
Bloodtracker
30% of 889 decks +30% synergy
Marionette Apprentice
30% of 270 decks +23% synergy
Dauthi Voidwalker
30% of 877 decks +22% synergy
Uro, Titan of Nature's Wrath
29% of 143 decks +25% synergy
Cankerbloom
29% of 108 decks +22% synergy
Gisa, Glorious Resurrector
28% of 871 decks +27% synergy
Fiend Artisan
27% of 143 decks +25% synergy
Imperial Recruiter
27% of 682 decks +21% synergy
Six
26% of 42 decks +19% synergy
Ramunap Excavator
26% of 143 decks +19% synergy
Gray Merchant of Asphodel
25% of 890 decks +16% synergy
Voldaren Thrillseeker
24% of 539 decks +24% synergy
Delighted Halfling
24% of 91 decks +10% synergy
Kithkin Spellduster
24% of 42 decks +24% synergy
Sun Titan
24% of 42 decks +14% synergy
Dryad of the Ilysian Grove
24% of 143 decks +16% synergy
Aftermath Analyst
24% of 59 decks +20% synergy
Instants
Chaos Warp
50% of 682 decks +19% synergy
Cyclonic Rift
49% of 890 decks +22% synergy
Counterspell
46% of 890 decks +3% synergy
Swords to Plowshares
45% of 42 decks -18% synergy
Enlightened Tutor
40% of 42 decks +23% synergy
Path to Exile
40% of 42 decks -5% synergy
Assassin's Trophy
34% of 143 decks +4% synergy
Vampiric Tutor
31% of 890 decks +13% synergy
Fierce Guardianship
30% of 883 decks +12% synergy
Mana Drain
27% of 890 decks +12% synergy
Terminate
25% of 682 decks +4% synergy
Village Rites
25% of 881 decks +15% synergy
Teferi's Protection
24% of 42 decks +4% synergy
Dovin's Veto
21% of 42 decks +2% synergy
Swan Song
21% of 890 decks +4% synergy
Arcane Denial
21% of 890 decks +1% synergy
Deflecting Swat
20% of 676 decks +4% synergy
Deadly Dispute
19% of 876 decks +8% synergy
Crop Rotation
17% of 143 decks +8% synergy
Despark
17% of 42 decks +1% synergy
An Offer You Can't Refuse
16% of 858 decks -5% synergy
Deadly Rollick
15% of 883 decks +4% synergy
Void Rend
15% of 40 decks +0% synergy
Negate
15% of 890 decks -8% synergy
Heroic Intervention
15% of 143 decks -15% synergy
Silence
14% of 42 decks +8% synergy
Act of Aggression
13% of 682 decks +13% synergy
Worldly Tutor
13% of 143 decks -1% synergy
Entomb
12% of 890 decks +5% synergy
Flare of Denial
12% of 277 decks +8% synergy
Anguished Unmaking
12% of 42 decks -12% synergy
Generous Gift
12% of 42 decks -14% synergy
Beast Within
12% of 143 decks -27% synergy
Plumb the Forbidden
12% of 877 decks +8% synergy
Fell the Profane
11% of 270 decks -0% synergy
Dark Ritual
11% of 890 decks -11% synergy
Bedevil
11% of 680 decks -3% synergy
Malakir Rebirth
10% of 881 decks +2% synergy
Feign Death
10% of 876 decks +8% synergy
Sink into Stupor
9% of 270 decks -4% synergy
First Day of Class
9% of 671 decks +9% synergy
Rakdos Charm
8% of 682 decks -7% synergy
Slip Out the Back
8% of 858 decks +5% synergy
Flare of Malice
7% of 272 decks +4% synergy
Flawless Maneuver
7% of 41 decks -3% synergy
Lethal Scheme
7% of 858 decks +6% synergy
Harrow
7% of 143 decks -3% synergy
Force of Will
7% of 890 decks -4% synergy
Domineering Will
6% of 890 decks +6% synergy
Reality Shift
6% of 890 decks -3% synergy
Sorceries
Toxic Deluge
45% of 890 decks +28% synergy
Mark of Mutiny
44% of 682 decks +44% synergy
Demonic Tutor
38% of 890 decks +16% synergy
Life from the Loam
38% of 143 decks +34% synergy
Feed the Swarm
37% of 881 decks +19% synergy
Vandalblast
34% of 682 decks +18% synergy
Damnation
31% of 890 decks +23% synergy
Diabolic Intent
29% of 890 decks +20% synergy
Mob Rule
28% of 682 decks +27% synergy
Reanimate
23% of 890 decks +7% synergy
Victimize
22% of 890 decks +10% synergy
Mass Mutiny
17% of 682 decks +17% synergy
Idyllic Tutor
17% of 42 decks +12% synergy
Living Death
16% of 890 decks +10% synergy
Insurrection
15% of 682 decks +14% synergy
Farseek
15% of 143 decks -19% synergy
Wave Goodbye
15% of 408 decks +12% synergy
Nature's Lore
15% of 143 decks -17% synergy
Cultivate
15% of 143 decks -31% synergy
Damn
15% of 41 decks -2% synergy
Wrath of God
14% of 42 decks +8% synergy
Three Visits
13% of 143 decks -11% synergy
Kodama's Reach
13% of 143 decks -19% synergy
Seize the Spotlight
12% of 659 decks +10% synergy
Sevinne's Reclamation
12% of 42 decks +5% synergy
Jeska's Will
11% of 675 decks -7% synergy
Farewell
10% of 40 decks -3% synergy
Culling Ritual
10% of 142 decks -1% synergy
Resurgent Belief
10% of 41 decks +8% synergy
Replenish
10% of 42 decks +9% synergy
Fractured Identity
10% of 42 decks +8% synergy
Supreme Verdict
10% of 42 decks -4% synergy
Squirming Emergence
9% of 74 decks +6% synergy
Act of Treason
9% of 682 decks +9% synergy
Kari Zev's Expertise
9% of 681 decks +9% synergy
Buried Alive
8% of 890 decks +3% synergy
Bala Ged Recovery
8% of 142 decks -1% synergy
Skyshroud Claim
8% of 143 decks -1% synergy
Agadeem's Awakening
8% of 881 decks +4% synergy
Furnace Reins
7% of 539 decks +7% synergy
Approach of the Second Sun
7% of 42 decks +3% synergy
Windfall
7% of 890 decks -6% synergy
Grim Tutor
7% of 890 decks +2% synergy
Vengeful Possession
7% of 92 decks +5% synergy
Rampant Growth
6% of 143 decks -28% synergy
Harness by Force
6% of 682 decks +6% synergy
Last One Standing
6% of 681 decks +5% synergy
Slave of Bolas
5% of 682 decks +5% synergy
Faithless Looting
5% of 682 decks -11% synergy
Utility Artifacts
Lightning Greaves
51% of 890 decks +26% synergy
The Ozolith
44% of 883 decks +41% synergy
Skullclamp
44% of 890 decks +32% synergy
Altar of Dementia
37% of 890 decks +35% synergy
Andúril, Narsil Reforged
29% of 497 decks +28% synergy
Swiftfoot Boots
28% of 890 decks +0% synergy
Agatha's Soul Cauldron
24% of 531 decks +22% synergy
Birthing Pod
24% of 143 decks +21% synergy
Hedge Shredder
22% of 23 decks +16% synergy
Conduit of Worlds
15% of 116 decks +8% synergy
The Great Henge
10% of 143 decks -0% synergy
Bolas's Citadel
9% of 888 decks +0% synergy
The One Ring
8% of 685 decks -1% synergy
Wayfarer's Bauble
8% of 890 decks -2% synergy
Matzalantli, the Great Door
5% of 427 decks +4% synergy
Bootleggers' Stash
5% of 138 decks +3% synergy
Mesmeric Orb
5% of 890 decks +4% synergy
Enchantments
Sneak Attack
57% of 682 decks +54% synergy
Thran Vigil
55% of 790 decks +55% synergy
Pernicious Deed
54% of 143 decks +52% synergy
Seal of Primordium
50% of 143 decks +49% synergy
Rhystic Study
46% of 890 decks +19% synergy
Phyrexian Unlife
45% of 42 decks +45% synergy
Rhythm of the Wild
43% of 7 decks +19% synergy
Trouble in Pairs
39% of 18 decks +32% synergy
Delaying Shield
38% of 42 decks +38% synergy
Into the Pit
34% of 90 decks +30% synergy
Nine Lives
34% of 41 decks +34% synergy
Smothering Tithe
33% of 42 decks +9% synergy
Dictate of Erebos
29% of 890 decks +25% synergy
Exploration
27% of 143 decks +18% synergy
Greater Auramancy
24% of 42 decks +22% synergy
Grave Pact
23% of 890 decks +19% synergy
Mystic Remora
21% of 890 decks +3% synergy
Sylvan Library
21% of 143 decks +9% synergy
Grave Betrayal
19% of 890 decks +18% synergy
Animate Dead
17% of 890 decks +8% synergy
Feast on the Fallen
17% of 890 decks +16% synergy
Ghostly Prison
17% of 42 decks +5% synergy
Defense of the Heart
16% of 143 decks +14% synergy
Black Market Connections
16% of 847 decks +5% synergy
Phyrexian Arena
14% of 890 decks -1% synergy
Greater Good
14% of 143 decks +9% synergy
Kaya's Ghostform
13% of 888 decks +9% synergy
Insidious Roots
12% of 58 decks +4% synergy
Inner Sanctum
12% of 42 decks +12% synergy
Celestial Convergence
12% of 42 decks +12% synergy
Darksteel Mutation
12% of 42 decks +6% synergy
Survival of the Fittest
12% of 143 decks +10% synergy
Journey to Eternity
12% of 143 decks +9% synergy
Kenrith's Transformation
12% of 143 decks +6% synergy
The Meathook Massacre
11% of 871 decks +6% synergy
All Will Be One
11% of 560 decks +8% synergy
Warstorm Surge
10% of 682 decks +5% synergy
Necropotence
10% of 890 decks +5% synergy
Elephant Grass
10% of 143 decks +9% synergy
Pattern of Rebirth
10% of 143 decks +9% synergy
Phyrexian Reclamation
10% of 890 decks +6% synergy
Black Market
10% of 890 decks +5% synergy
Force Bubble
10% of 42 decks +10% synergy
Aura of Silence
10% of 42 decks +7% synergy
Grasp of Fate
10% of 42 decks +6% synergy
Land Tax
10% of 42 decks +3% synergy
Carpet of Flowers
8% of 143 decks +5% synergy
Wild Growth
8% of 143 decks -3% synergy
Attrition
8% of 890 decks +7% synergy
Martyr's Bond
7% of 42 decks +7% synergy
Battles
Invasion of Zendikar
6% of 93 decks +4% synergy
Planeswalkers
Oko, Thief of Crowns
24% of 143 decks +19% synergy
Wrenn and Realmbreaker
14% of 100 decks +12% synergy
Tamiyo, Collector of Tales
14% of 143 decks +13% synergy
Geyadrone Dihada
12% of 671 decks +10% synergy
Liliana, Dreadhorde General
8% of 888 decks +4% synergy
Ashiok, Dream Render
8% of 888 decks +4% synergy
Grist, the Hunger Tide
6% of 142 decks +2% synergy
Utility Lands
Phyrexian Tower
57% of 890 decks +49% synergy
High Market
43% of 890 decks +40% synergy
Urborg, Tomb of Yawgmoth
43% of 890 decks +34% synergy
Boseiju, Who Endures
39% of 139 decks +19% synergy
Forge of Heroes
35% of 889 decks +34% synergy
Bojuka Bog
34% of 890 decks +4% synergy
Shifting Woodland
33% of 42 decks +24% synergy
Reliquary Tower
31% of 890 decks +2% synergy
Hall of Heliod's Generosity
24% of 42 decks +17% synergy
Ancient Tomb
21% of 890 decks +11% synergy
Spymaster's Vault
17% of 270 decks +13% synergy
Otawara, Soaring City
15% of 863 decks -2% synergy
The Black Gate
15% of 565 decks +11% synergy
Cabal Coffers
13% of 890 decks +3% synergy
Takenuma, Abandoned Mire
12% of 863 decks +2% synergy
Tyrite Sanctum
11% of 879 decks +9% synergy
Command Beacon
11% of 889 decks +6% synergy
Nesting Grounds
11% of 883 decks +9% synergy
Urza's Saga
11% of 877 decks +4% synergy
Drannith Ruins
11% of 616 decks +10% synergy
Strip Mine
9% of 890 decks +6% synergy
Field of the Dead
8% of 888 decks +5% synergy
Rogue's Passage
8% of 890 decks -12% synergy
Yavimaya, Cradle of Growth
7% of 877 decks -2% synergy
Gaea's Cradle
6% of 143 decks +1% synergy
Temple of the False God
5% of 890 decks -4% synergy
Mana Artifacts
Sol Ring
94% of 890 decks +9% synergy
Arcane Signet
86% of 885 decks +14% synergy
Talisman of Indulgence
62% of 682 decks +36% synergy
Talisman of Creativity
57% of 680 decks +28% synergy
Talisman of Dominance
56% of 890 decks +24% synergy
Rakdos Signet
44% of 682 decks +14% synergy
Dimir Signet
38% of 890 decks +9% synergy
Talisman of Progress
36% of 42 decks +13% synergy
Talisman of Hierarchy
36% of 42 decks +11% synergy
Izzet Signet
34% of 682 decks +6% synergy
Fellwar Stone
29% of 890 decks +8% synergy
Azorius Signet
26% of 42 decks +0% synergy
Orzhov Signet
26% of 42 decks -1% synergy
Chromatic Lantern
16% of 890 decks +7% synergy
Relic of Sauron
16% of 445 decks +4% synergy
Mana Crypt
13% of 890 decks +5% synergy
Lotus Petal
13% of 890 decks +6% synergy
Golgari Signet
11% of 143 decks -1% synergy
Simic Signet
10% of 143 decks -5% synergy
Commander's Sphere
10% of 890 decks -5% synergy
Thought Vessel
10% of 889 decks -7% synergy
Talisman of Resilience
8% of 143 decks -3% synergy
Talisman of Curiosity
7% of 143 decks -5% synergy
Jeweled Lotus
7% of 881 decks +1% synergy
Mind Stone
6% of 890 decks -11% synergy
Mana Vault
6% of 890 decks -1% synergy
Lands
Command Tower
93% of 890 decks +19% synergy
Overgrown Tomb
83% of 143 decks +41% synergy
Watery Grave
80% of 890 decks +39% synergy
Breeding Pool
80% of 143 decks +39% synergy
Steam Vents
79% of 682 decks +40% synergy
Blood Crypt
78% of 682 decks +39% synergy
Godless Shrine
76% of 42 decks +36% synergy
Hallowed Fountain
76% of 42 decks +36% synergy
Zagoth Triome
75% of 143 decks +44% synergy
Xander's Lounge
70% of 659 decks +42% synergy
Training Center
57% of 675 decks +30% synergy
Stomping Ground
57% of 7 decks +16% synergy
Luxury Suite
57% of 681 decks +31% synergy
Polluted Delta
57% of 890 decks +46% synergy
Shivan Reef
54% of 682 decks +27% synergy
Vault of Champions
54% of 41 decks +28% synergy
Exotic Orchard
54% of 890 decks +18% synergy
Dragonskull Summit
53% of 682 decks +22% synergy
Morphic Pool
53% of 889 decks +27% synergy
Raffine's Tower
52% of 40 decks +25% synergy
Undergrowth Stadium
52% of 142 decks +26% synergy
Rejuvenating Springs
51% of 142 decks +22% synergy
Sea of Clouds
50% of 42 decks +24% synergy
Temple Garden
50% of 8 decks +10% synergy
Sulfurous Springs
49% of 682 decks +29% synergy
Drowned Catacomb
48% of 890 decks +22% synergy
Bloodstained Mire
46% of 890 decks +36% synergy
Crumbling Necropolis
46% of 682 decks +15% synergy
Sulfur Falls
45% of 682 decks +14% synergy
Underground River
44% of 890 decks +25% synergy
Scalding Tarn
44% of 890 decks +33% synergy
Hedge Maze
40% of 65 decks +26% synergy
Underground Mortuary
40% of 65 decks +24% synergy
Tundra
38% of 42 decks +24% synergy
Sacred Foundry
38% of 8 decks +1% synergy
Scrubland
33% of 42 decks +20% synergy
Hinterland Harbor
33% of 143 decks +5% synergy
Woodland Cemetery
33% of 143 decks +5% synergy
Opal Palace
32% of 890 decks +29% synergy
Deserted Beach
29% of 41 decks +13% synergy
Opulent Palace
29% of 143 decks +2% synergy
Arcane Sanctum
29% of 42 decks +1% synergy
Sunken Hollow
28% of 889 decks -6% synergy
Shattered Sanctum
28% of 40 decks +14% synergy
Bayou
27% of 143 decks +13% synergy
Tropical Island
27% of 143 decks +12% synergy
Smoldering Marsh
26% of 681 decks -6% synergy
City of Brass
26% of 890 decks +18% synergy
Shipwreck Marsh
26% of 871 decks +7% synergy
Llanowar Wastes
26% of 143 decks +0% synergy