River Kelpie + Mikaeus, the Unhallowed + Ashnod's Altar

River Kelpie
Mikaeus, the Unhallowed
Ashnod's Altar

Requires
River Kelpie must be on the battlefield. Mikaeus, the Unhallowed must be on the battlefield. Ashnod's Altar must be on the battlefield.
Steps
  1. Activate Ashnod's Altar by sacrificing River Kelpie, adding .
  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 Ashnod's Altar by sacrificing River Kelpie, adding .
  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 colorless mana. Near-infinite death triggers. Near-infinite ETB. Near-infinite LTB. Near-infinite sacrifice triggers.

Marchesa, the Black Rose
12.32% of 9456 decks 1165 decks
Muldrotha, the Gravetide
0.93% of 15505 decks 144 decks
Zur the Enchanter
0.13% of 11214 decks 15 decks
Missy
0.81% of 1858 decks 15 decks
Wilhelt, the Rotcleaver
0.06% of 18990 decks 11 decks
The Scarab God
0.07% of 10459 decks 7 decks
Gisa and Geralf
0.15% of 4759 decks 7 decks
Bane, Lord of Darkness
0.24% of 2122 decks 5 decks
Grimgrin, Corpse-Born
0.24% of 2123 decks 5 decks
Kenrith, the Returned King
0.02% of 21730 decks 4 decks
The Master, Formed Anew
0.64% of 466 decks 3 decks
Ishai, Ojutai Dragonspeaker // Reyhan, Last of the Abzan
0.19% of 1572 decks 3 decks
Ghost of Ramirez DePietro // Tormod, the Desecrator
0.56% of 540 decks 3 decks
Satoru, the Infiltrator
0.22% of 1347 decks 3 decks
Nevinyrral, Urborg Tyrant
0.13% of 1541 decks 2 decks
Ertai, the Corrupted
0.27% of 733 decks 2 decks
Garth One-Eye
0.05% of 4116 decks 2 decks
Varina, Lich Queen
0.03% of 7100 decks 2 decks
New Cards
Alesha, Who Laughs at Fate
66% of 38 decks +50% synergy
Perforating Artist
57% of 7 decks +43% synergy
Blasphemous Edict
52% of 44 decks +18% synergy
Withering Torment
49% of 116 decks +30% synergy
High-Society Hunter
43% of 44 decks +38% synergy
High Synergy Cards
Flayer of the Hatebound
86% of 1200 decks +85% synergy
Uncivil Unrest
82% of 932 decks +80% synergy
Unspeakable Symbol
73% of 1434 decks +73% synergy
Goblin Bombardment
78% of 1200 decks +71% synergy
Gev, Scaled Scorch
73% of 193 decks +71% synergy
Kitchen Finks
71% of 14 decks +71% synergy
Spore Frog
73% of 166 decks +70% synergy
Carrion Feeder
72% of 1434 decks +67% synergy
Glen Elendra Archmage
68% of 1434 decks +65% synergy
Thran Vigil
66% of 1268 decks +65% synergy
Top Cards
Blasphemous Act
76% of 1200 decks +43% synergy
Viscera Seer
71% of 1434 decks +62% synergy
Eternal Witness
70% of 166 decks +49% synergy
Sakura-Tribe Elder
68% of 166 decks +50% synergy
Solemn Simulacrum
68% of 1434 decks +54% synergy
Grim Haruspex
67% of 1434 decks +63% synergy
Baleful Strix
67% of 1434 decks +53% synergy
Luminous Broodmoth
61% of 44 decks +59% synergy
Yahenni, Undying Partisan
61% of 1432 decks +58% synergy
Pernicious Deed
61% of 166 decks +59% synergy
Creatures
Iron Apprentice
61% of 1372 decks +60% synergy
Drana, Liberator of Malakir
58% of 1433 decks +56% synergy
Warren Soultrader
58% of 386 decks +50% synergy
Scorn-Blade Berserker
57% of 1029 decks +57% synergy
Heartmender
57% of 14 decks +57% synergy
Herald of Secret Streams
56% of 1430 decks +53% synergy
Mahadi, Emporium Master
55% of 1137 decks +49% synergy
Gleeful Arsonist
53% of 85 decks +45% synergy
Danny Pink
53% of 748 decks +51% synergy
Haywire Mite
52% of 126 decks +48% synergy
Satoru, the Infiltrator
52% of 454 decks +48% synergy
Juri, Master of the Revue
51% of 1180 decks +48% synergy
Spark Double
50% of 1424 decks +43% synergy
Thundering Raiju
50% of 1163 decks +49% synergy
Doc Aurlock, Grizzled Genius
48% of 46 decks +43% synergy
Braids, Arisen Nightmare
46% of 1314 decks +38% synergy
World Shaper
46% of 166 decks +43% synergy
The Gitrog Monster
46% of 166 decks +41% synergy
Birds of Paradise
43% of 166 decks +16% synergy
Sage of Fables
43% of 1434 decks +42% synergy
Zealous Conscripts
42% of 1200 decks +40% synergy
Bloodtracker
41% of 1426 decks +41% synergy
Underrealm Lich
41% of 164 decks +37% synergy
Puppeteer Clique
41% of 1434 decks +39% synergy
Accursed Marauder
40% of 306 decks +31% synergy
Gisa, Glorious Resurrector
39% of 1387 decks +38% synergy
Pollywog Prodigy
38% of 185 decks +27% synergy
Mulldrifter
37% of 1434 decks +31% synergy
Aftermath Analyst
36% of 50 decks +32% synergy
Marionette Apprentice
36% of 386 decks +28% synergy
Safehold Elite
36% of 14 decks +36% synergy
Good-Fortune Unicorn
36% of 14 decks +33% synergy
Fain, the Broker
35% of 1399 decks +33% synergy
Cankerbloom
34% of 108 decks +27% synergy
Voldaren Thrillseeker
33% of 938 decks +33% synergy
Dockside Extortionist
31% of 1188 decks +19% synergy
Hermit Druid
30% of 166 decks +29% synergy
Grumgully, the Generous
30% of 10 decks +28% synergy
Yawgmoth, Thran Physician
29% of 1420 decks +25% synergy
Elas il-Kor, Sadistic Pilgrim
28% of 39 decks +17% synergy
Caustic Caterpillar
28% of 166 decks +26% synergy
Springbloom Druid
27% of 164 decks +23% synergy
Kethek, Crucible Goliath
27% of 1007 decks +26% synergy
Esper Sentinel
26% of 42 decks +6% synergy
Satyr Wayfinder
26% of 166 decks +24% synergy
Dauthi Voidwalker
26% of 1396 decks +18% synergy
Bloodflow Connoisseur
25% of 1434 decks +25% synergy
Obstinate Gargoyle
25% of 12 decks +25% synergy
Gray Merchant of Asphodel
25% of 1434 decks +15% synergy
Ramunap Excavator
24% of 166 decks +17% synergy
Instants
Chaos Warp
55% of 1200 decks +23% synergy
Counterspell
52% of 1434 decks +9% synergy
Cyclonic Rift
43% of 1434 decks +16% synergy
Swords to Plowshares
42% of 45 decks -21% synergy
Terminate
36% of 1200 decks +16% synergy
Village Rites
35% of 1409 decks +25% synergy
Enlightened Tutor
33% of 45 decks +16% synergy
Path to Exile
33% of 45 decks -12% synergy
Deadly Dispute
29% of 1391 decks +18% synergy
Assassin's Trophy
29% of 164 decks -2% synergy
Arcane Denial
26% of 1434 decks +6% synergy
Negate
24% of 1434 decks +1% synergy
Teferi's Protection
22% of 45 decks +2% synergy
Vampiric Tutor
22% of 1434 decks +4% synergy
Eladamri's Call
21% of 14 decks +10% synergy
Fierce Guardianship
20% of 1412 decks +2% synergy
Mana Drain
19% of 1434 decks +3% synergy
Dovin's Veto
18% of 45 decks -1% synergy
Swan Song
17% of 1434 decks +0% synergy
Void Rend
17% of 42 decks +2% synergy
An Offer You Can't Refuse
16% of 1360 decks -5% synergy
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15% of 1399 decks +12% synergy
Feign Death
14% of 1391 decks +12% synergy
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Anguished Unmaking
13% of 45 decks -11% synergy
Generous Gift
13% of 45 decks -12% synergy
Beast Within
13% of 166 decks -25% synergy
Deflecting Swat
12% of 1184 decks -4% synergy
Act of Aggression
12% of 1200 decks +12% synergy
Deadly Rollick
11% of 1412 decks +1% synergy
Silence
11% of 45 decks +5% synergy
Fell the Profane
11% of 386 decks -1% synergy
Flare of Denial
11% of 398 decks +7% synergy
Crop Rotation
10% of 166 decks +0% synergy
Rakdos Charm
10% of 1200 decks -4% synergy
Dark Ritual
9% of 1434 decks -13% synergy
Cauldron Haze
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Slip Out the Back
8% of 1360 decks +6% synergy
Wither and Bloom
8% of 259 decks +8% synergy
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First Day of Class
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Heroic Intervention
8% of 166 decks -22% synergy
Lethal Scheme
8% of 1360 decks +6% synergy
Don't Make a Sound
8% of 52 decks +1% synergy
Entomb
7% of 1434 decks -0% synergy
Harrow
7% of 166 decks -2% synergy
Worldly Tutor
7% of 166 decks -7% synergy
Flare of Malice
7% of 391 decks +4% synergy
Domineering Will
7% of 1434 decks +6% synergy
Sorceries
Mark of Mutiny
50% of 1200 decks +50% synergy
Toxic Deluge
45% of 1434 decks +27% synergy
Feed the Swarm
44% of 1407 decks +26% synergy
Vandalblast
41% of 1200 decks +25% synergy
Mob Rule
36% of 1200 decks +34% synergy
Demonic Tutor
31% of 1434 decks +9% synergy
Life from the Loam
27% of 166 decks +23% synergy
Diabolic Intent
24% of 1434 decks +15% synergy
Damnation
24% of 1434 decks +16% synergy
Mass Mutiny
23% of 1200 decks +23% synergy
Victimize
22% of 1434 decks +11% synergy
Idyllic Tutor
20% of 45 decks +15% synergy
Wave Goodbye
18% of 625 decks +15% synergy
Farseek
17% of 166 decks -17% synergy
Reanimate
16% of 1434 decks +0% synergy
Wrath of God
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Insurrection
15% of 1200 decks +13% synergy
Three Visits
14% of 166 decks -10% synergy
Damn
14% of 42 decks -2% synergy
Living Death
13% of 1434 decks +8% synergy
Sevinne's Reclamation
13% of 45 decks +6% synergy
Supreme Verdict
13% of 45 decks -1% synergy
Nature's Lore
13% of 166 decks -19% synergy
Seize the Spotlight
12% of 1155 decks +11% synergy
Cultivate
12% of 166 decks -34% synergy
Resurgent Belief
12% of 42 decks +10% synergy
Farewell
12% of 42 decks -2% synergy
Replenish
11% of 45 decks +10% synergy
Kodama's Reach
10% of 166 decks -21% synergy
Villainous Wealth
9% of 166 decks +1% synergy
Act of Treason
9% of 1200 decks +8% synergy
Kari Zev's Expertise
9% of 1198 decks +8% synergy
Jeska's Will
8% of 1180 decks -9% synergy
Rampant Growth
7% of 166 decks -27% synergy
Furnace Reins
7% of 938 decks +6% synergy
Slave of Bolas
7% of 1200 decks +6% synergy
Approach of the Second Sun
7% of 45 decks +3% synergy
Last One Standing
6% of 1194 decks +5% synergy
Buried Alive
6% of 1434 decks +1% synergy
Culling Ritual
6% of 158 decks -5% synergy
Bala Ged Recovery
6% of 161 decks -3% synergy
Vengeful Possession
6% of 98 decks +5% synergy
Eldritch Evolution
6% of 166 decks +1% synergy
Skyshroud Claim
6% of 166 decks -3% synergy
Windfall
6% of 1434 decks -7% synergy
Agadeem's Awakening
6% of 1407 decks +2% synergy
Chain Reaction
5% of 1200 decks +1% synergy
Press into Service
5% of 1199 decks +5% synergy
Grim Tutor
5% of 1434 decks +0% synergy
Diabolic Tutor
5% of 1434 decks -1% synergy
Utility Artifacts
Lightning Greaves
55% of 1434 decks +29% synergy
Phyrexian Altar
49% of 1434 decks +45% synergy
The Ozolith
46% of 1412 decks +42% synergy
Skullclamp
42% of 1434 decks +30% synergy
Andúril, Narsil Reforged
35% of 765 decks +34% synergy
Swiftfoot Boots
30% of 1434 decks +2% synergy
Altar of Dementia
29% of 1434 decks +27% synergy
Birthing Pod
28% of 166 decks +26% synergy
Hedge Shredder
28% of 18 decks +21% synergy
Agatha's Soul Cauldron
21% of 815 decks +19% synergy
Bolas's Citadel
9% of 1424 decks +0% synergy
The Great Henge
9% of 164 decks -1% synergy
Wayfarer's Bauble
9% of 1434 decks -2% synergy
Conduit of Worlds
8% of 112 decks +2% synergy
Desecrated Tomb
5% of 1426 decks +5% synergy
Enchantments
Solemnity
60% of 45 decks +59% synergy
Sneak Attack
59% of 1200 decks +57% synergy
Seal of Primordium
58% of 166 decks +56% synergy
Into the Pit
43% of 93 decks +38% synergy
Rhystic Study
39% of 1434 decks +12% synergy
Phyrexian Unlife
38% of 45 decks +37% synergy
Trouble in Pairs
35% of 17 decks +28% synergy
Delaying Shield
33% of 45 decks +33% synergy
Rhythm of the Wild
30% of 10 decks +7% synergy
Nine Lives
27% of 44 decks +27% synergy
Dictate of Erebos
27% of 1434 decks +23% synergy
Smothering Tithe
27% of 45 decks +2% synergy
Grave Betrayal
23% of 1434 decks +22% synergy
Feast on the Fallen
22% of 1434 decks +22% synergy
Greater Auramancy
22% of 45 decks +21% synergy
Greater Good
21% of 166 decks +16% synergy
Grave Pact
20% of 1434 decks +15% synergy
Exploration
19% of 166 decks +10% synergy
Ghostly Prison
18% of 45 decks +6% synergy
Mystic Remora
17% of 1434 decks -1% synergy
Defense of the Heart
17% of 166 decks +14% synergy
Phyrexian Arena
16% of 1434 decks +1% synergy
Kenrith's Transformation
16% of 164 decks +9% synergy
Inner Sanctum
16% of 45 decks +16% synergy
Celestial Convergence
16% of 45 decks +15% synergy
Sylvan Library
14% of 166 decks +3% synergy
Warstorm Surge
14% of 1200 decks +9% synergy
Force Bubble
13% of 45 decks +13% synergy
Black Market Connections
13% of 1338 decks +2% synergy
All Will Be One
13% of 977 decks +10% synergy
Journey to Eternity
13% of 166 decks +9% synergy
Animate Dead
12% of 1434 decks +3% synergy
Cathars' Crusade
11% of 45 decks +6% synergy
Elephant Grass
10% of 166 decks +10% synergy
Pattern of Rebirth
10% of 166 decks +10% synergy
Seal from Existence
10% of 31 decks +9% synergy
Phyrexian Reclamation
9% of 1434 decks +6% synergy
Survival of the Fittest
9% of 166 decks +7% synergy
Martyr's Cause
9% of 45 decks +8% synergy
Fanatical Devotion
9% of 45 decks +8% synergy
Black Market
9% of 1434 decks +4% synergy
Kaya's Ghostform
8% of 1424 decks +4% synergy
Sultai Ascendancy
7% of 166 decks +5% synergy
Necropotence
7% of 1434 decks +2% synergy
Martyr's Bond
7% of 45 decks +6% synergy
Karmic Justice
7% of 45 decks +5% synergy
Banishing Light
7% of 45 decks +5% synergy
Grasp of Fate
7% of 45 decks +3% synergy
Blind Obedience
7% of 45 decks -0% synergy
The Meathook Massacre
6% of 1387 decks +1% synergy
Planeswalkers
Geyadrone Dihada
17% of 1174 decks +15% synergy
Oko, Thief of Crowns
16% of 164 decks +11% synergy
Tamiyo, Collector of Tales
15% of 164 decks +13% synergy
Wrenn and Realmbreaker
12% of 96 decks +10% synergy
Liliana, Dreadhorde General
7% of 1424 decks +3% synergy
Teferi, Time Raveler
7% of 45 decks +0% synergy
Ashiok, Dream Render
6% of 1424 decks +2% synergy
Utility Lands
High Market
49% of 1434 decks +46% synergy
Phyrexian Tower
45% of 1434 decks +36% synergy
Forge of Heroes
44% of 1426 decks +43% synergy
Bojuka Bog
40% of 1434 decks +10% synergy
Urborg, Tomb of Yawgmoth
32% of 1434 decks +22% synergy
Reliquary Tower
29% of 1434 decks -0% synergy
Hall of Heliod's Generosity
27% of 45 decks +20% synergy
Boseiju, Who Endures
26% of 150 decks +6% synergy
Spymaster's Vault
20% of 386 decks +16% synergy
Ancient Tomb
15% of 1434 decks +5% synergy
The Black Gate
15% of 885 decks +11% synergy
Shifting Woodland
14% of 37 decks +4% synergy
Tyrite Sanctum
13% of 1402 decks +11% synergy
Drannith Ruins
12% of 967 decks +11% synergy
Otawara, Soaring City
10% of 1372 decks -6% synergy
Nesting Grounds
10% of 1412 decks +9% synergy
Cabal Coffers
10% of 1434 decks -1% synergy
Rogue's Passage
10% of 1434 decks -10% synergy
Command Beacon
9% of 1433 decks +5% synergy
Takenuma, Abandoned Mire
9% of 1372 decks -2% synergy
Temple of the False God
7% of 1434 decks -3% synergy
Urza's Saga
6% of 1396 decks -1% synergy
Tranquil Thicket
6% of 166 decks +2% synergy
Grim Backwoods
6% of 166 decks +2% synergy
Alchemist's Refuge
6% of 166 decks -1% synergy
Karn's Bastion
6% of 1424 decks +1% synergy
Strip Mine
6% of 1434 decks +3% synergy
Arena of Glory
5% of 274 decks -4% synergy
Gaea's Cradle
5% of 166 decks -0% synergy
Mana Artifacts
Sol Ring
94% of 1434 decks +10% synergy
Arcane Signet
88% of 1417 decks +16% synergy
Talisman of Indulgence
61% of 1200 decks +35% synergy
Talisman of Dominance
59% of 1434 decks +27% synergy
Talisman of Creativity
58% of 1188 decks +29% synergy
Rakdos Signet
52% of 1200 decks +22% synergy
Dimir Signet
46% of 1434 decks +16% synergy
Izzet Signet
40% of 1200 decks +12% synergy
Fellwar Stone
27% of 1434 decks +6% synergy
Talisman of Hierarchy
27% of 45 decks +2% synergy
Orzhov Signet
24% of 45 decks -3% synergy
Talisman of Progress
22% of 45 decks -1% synergy
Azorius Signet
22% of 45 decks -4% synergy
Chromatic Lantern
17% of 1434 decks +8% synergy
Golgari Signet
16% of 166 decks +3% synergy
Relic of Sauron
13% of 766 decks +2% synergy
Simic Signet
13% of 166 decks -1% synergy
Commander's Sphere
11% of 1434 decks -4% synergy
Thought Vessel
10% of 1433 decks -7% synergy
Mana Crypt
9% of 1434 decks +1% synergy
Lotus Petal
8% of 1434 decks +1% synergy
Talisman of Resilience
7% of 164 decks -5% synergy
Mind Stone
7% of 1434 decks -11% synergy
Lands
Command Tower
93% of 1434 decks +19% synergy
Overgrown Tomb
70% of 166 decks +28% synergy
Watery Grave
69% of 1434 decks +28% synergy
Blood Crypt
68% of 1200 decks +29% synergy
Steam Vents
68% of 1200 decks +29% synergy
Breeding Pool
65% of 166 decks +24% synergy
Xander's Lounge
64% of 1155 decks +36% synergy
Godless Shrine
60% of 45 decks +19% synergy
Hallowed Fountain
60% of 45 decks +19% synergy
Exotic Orchard
60% of 1434 decks +24% synergy
Dragonskull Summit
59% of 1200 decks +28% synergy
Crumbling Necropolis
57% of 1200 decks +26% synergy
Zagoth Triome
57% of 162 decks +26% synergy
Shivan Reef
56% of 1200 decks +30% synergy
Drowned Catacomb
54% of 1434 decks +29% synergy
Sulfur Falls
52% of 1200 decks +21% synergy
Training Center
51% of 1180 decks +23% synergy
Sulfurous Springs
49% of 1200 decks +28% synergy
Luxury Suite
48% of 1194 decks +21% synergy
Raffine's Tower
48% of 42 decks +20% synergy
Underground River
47% of 1434 decks +27% synergy
Vault of Champions
47% of 43 decks +21% synergy
Woodland Cemetery
46% of 166 decks +18% synergy
Hinterland Harbor
46% of 166 decks +18% synergy
Undergrowth Stadium
44% of 161 decks +18% synergy
Morphic Pool
43% of 1426 decks +17% synergy
Temple Garden
43% of 14 decks +2% synergy
Polluted Delta
41% of 1434 decks +30% synergy
Rejuvenating Springs
40% of 161 decks +12% synergy
Sea of Clouds
40% of 45 decks +14% synergy
The World Tree
40% of 10 decks +7% synergy
Stomping Ground
40% of 10 decks -1% synergy
Opulent Palace
40% of 166 decks +13% synergy
Sunken Hollow
39% of 1433 decks +4% synergy
Opal Palace
39% of 1434 decks +36% synergy
Llanowar Wastes
37% of 166 decks +11% synergy
Bloodstained Mire
36% of 1434 decks +26% synergy
Arcane Sanctum
36% of 45 decks +8% synergy
Tundra
33% of 45 decks +19% synergy
Yavimaya Coast
33% of 166 decks +7% synergy
Scalding Tarn
33% of 1434 decks +22% synergy
Hedge Maze
31% of 54 decks +17% synergy
Underground Mortuary
31% of 54 decks +15% synergy
Smoldering Marsh
31% of 1199 decks -1% synergy
Seething Landscape
30% of 274 decks +14% synergy
Scrubland
29% of 45 decks +15% synergy
Deserted Beach
29% of 42 decks +12% synergy
Raugrin Triome
27% of 11 decks +1% synergy
Sacred Foundry
27% of 11 decks -9% synergy
Deathcap Glade
26% of 152 decks +12% synergy