River Kelpie + Mikaeus, the Unhallowed + Altar of Dementia

River Kelpie
Mikaeus, the Unhallowed
Altar of Dementia

Requires
River Kelpie must be on the battlefield. Mikaeus, the Unhallowed must be on the battlefield. Altar of Dementia must be on the battlefield.
Steps
  1. Activate Altar of Dementia by sacrificing River Kelpie.
  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. Resolve the Altar of Dementia trigger, causing target player to mill cards equal to River Kelpie's power.
  7. Activate Altar of Dementia by sacrificing River Kelpie.
  8. River Kelpie's undying and persist abilities trigger.
  9. Resolve the undying trigger, returning River Kelpie from your graveyard to the battlefield with a +1/+1 counter on it.
  10. River Kelpie enters the battlefield, causing you to draw a card.
  11. The persist trigger fails to resolve because River Kelpie is not in your graveyard.
  12. Resolve the Altar of Dementia trigger, causing target player to mill cards equal to River Kelpie's power.
  13. Repeat.
Results
Infinite card draw. Near-infinite death triggers. Near-infinite ETB. Near-infinite LTB. Near-infinite mill. Near-infinite sacrifice triggers.

Muldrotha, the Gravetide
1.80% of 15570 decks 280 decks
Marchesa, the Black Rose
2.84% of 9496 decks 270 decks
Zur the Enchanter
0.16% of 11235 decks 18 decks
Sedris, the Traitor King
0.43% of 1882 decks 8 decks
Wilhelt, the Rotcleaver
0.04% of 19009 decks 8 decks
Missy
0.43% of 1863 decks 8 decks
Sidisi, Brood Tyrant
0.08% of 6377 decks 5 decks
Gisa and Geralf
0.08% of 4779 decks 4 decks
The Scarab God
0.04% of 10483 decks 4 decks
The Master, Formed Anew
0.64% of 472 decks 3 decks
Kenrith, the Returned King
0.01% of 21799 decks 3 decks
Bane, Lord of Darkness
0.09% of 2125 decks 2 decks
Ghost of Ramirez DePietro // Tormod, the Desecrator
0.37% of 541 decks 2 decks
Kraum, Ludevic's Opus // Tormod, the Desecrator
0.70% of 286 decks 2 decks
Grimgrin, Corpse-Born
0.09% of 2129 decks 2 decks
The Wise Mothman
0.01% of 13356 decks 2 decks
Sefris of the Hidden Ways
0.02% of 8772 decks 2 decks
Tasigur, the Golden Fang
0.02% of 5863 decks 1 decks
New Cards
Alesha, Who Laughs at Fate
71% of 7 decks +56% synergy
Kiora, the Rising Tide
57% of 7 decks +45% synergy
Insidious Fungus
48% of 23 decks +43% synergy
Blasphemous Edict
47% of 15 decks +13% synergy
Hedge Shredder
45% of 31 decks +39% synergy
High Synergy Cards
Flayer of the Hatebound
79% of 298 decks +78% synergy
Kitchen Finks
78% of 9 decks +77% synergy
Luminous Broodmoth
78% of 37 decks +76% synergy
Solemnity
76% of 38 decks +75% synergy
Spore Frog
77% of 300 decks +74% synergy
Gev, Scaled Scorch
71% of 41 decks +69% synergy
Pernicious Deed
71% of 300 decks +69% synergy
Uncivil Unrest
70% of 228 decks +68% synergy
Goblin Bombardment
72% of 298 decks +66% synergy
Seal of Primordium
67% of 300 decks +66% synergy
Top Cards
Eternal Witness
76% of 300 decks +55% synergy
Sakura-Tribe Elder
72% of 300 decks +54% synergy
Glen Elendra Archmage
67% of 649 decks +64% synergy
Blasphemous Act
66% of 298 decks +32% synergy
Ashnod's Altar
65% of 649 decks +58% synergy
Haywire Mite
58% of 238 decks +54% synergy
Heartmender
56% of 9 decks +56% synergy
Safehold Elite
56% of 9 decks +55% synergy
Phyrexian Unlife
55% of 38 decks +55% synergy
Sneak Attack
54% of 298 decks +51% synergy
Creatures
Doc Aurlock, Grizzled Genius
52% of 85 decks +47% synergy
World Shaper
51% of 300 decks +48% synergy
Underrealm Lich
51% of 300 decks +47% synergy
Baleful Strix
50% of 649 decks +37% synergy
Grumgully, the Generous
50% of 6 decks +48% synergy
Viscera Seer
49% of 649 decks +40% synergy
The Gitrog Monster
48% of 300 decks +43% synergy
Birds of Paradise
48% of 300 decks +21% synergy
Good-Fortune Unicorn
44% of 9 decks +42% synergy
Solemn Simulacrum
43% of 649 decks +29% synergy
Accursed Marauder
42% of 118 decks +33% synergy
Carrion Feeder
41% of 649 decks +36% synergy
Juri, Master of the Revue
41% of 291 decks +37% synergy
Mulldrifter
40% of 649 decks +34% synergy
Mahadi, Emporium Master
38% of 283 decks +31% synergy
Gleeful Arsonist
38% of 16 decks +30% synergy
Neerdiv, Devious Diver
35% of 17 decks +34% synergy
Cankerbloom
35% of 188 decks +28% synergy
Hermit Druid
34% of 300 decks +33% synergy
Warren Soultrader
34% of 149 decks +26% synergy
Juniper Order Ranger
33% of 9 decks +32% synergy
Braids, Arisen Nightmare
33% of 579 decks +26% synergy
Plaguecrafter
33% of 648 decks +28% synergy
Dockside Extortionist
32% of 294 decks +20% synergy
Grim Haruspex
32% of 648 decks +28% synergy
Zealous Conscripts
32% of 298 decks +30% synergy
Gravebreaker Lamia
32% of 640 decks +31% synergy
Aftermath Analyst
32% of 97 decks +28% synergy
Sun Titan
32% of 38 decks +21% synergy
Dauthi Voidwalker
31% of 627 decks +23% synergy
Thundering Raiju
30% of 289 decks +29% synergy
Siren Stormtamer
30% of 648 decks +27% synergy
Yahenni, Undying Partisan
30% of 648 decks +27% synergy
Satoru, the Infiltrator
30% of 185 decks +26% synergy
Scorn-Blade Berserker
29% of 402 decks +29% synergy
Satyr Wayfinder
29% of 300 decks +27% synergy
Iron Apprentice
28% of 608 decks +28% synergy
Six
28% of 68 decks +21% synergy
Esper Sentinel
28% of 36 decks +7% synergy
Uro, Titan of Nature's Wrath
28% of 297 decks +23% synergy
Obstinate Gargoyle
27% of 11 decks +27% synergy
Puppeteer Clique
27% of 649 decks +25% synergy
Sidisi, Brood Tyrant
27% of 300 decks +25% synergy
Imperial Recruiter
27% of 298 decks +20% synergy
Fiend Artisan
26% of 295 decks +24% synergy
Kithkin Spellduster
26% of 38 decks +26% synergy
Caustic Caterpillar
26% of 300 decks +24% synergy
Glarb, Calamity's Augur
26% of 39 decks +22% synergy
Springbloom Druid
25% of 299 decks +21% synergy
Danny Pink
25% of 292 decks +24% synergy
Instants
Swords to Plowshares
47% of 38 decks -15% synergy
Chaos Warp
46% of 298 decks +14% synergy
Enlightened Tutor
42% of 38 decks +24% synergy
Cyclonic Rift
40% of 649 decks +12% synergy
Counterspell
37% of 649 decks -6% synergy
Path to Exile
37% of 38 decks -9% synergy
Teferi's Protection
34% of 38 decks +14% synergy
Assassin's Trophy
32% of 300 decks +2% synergy
Terminate
28% of 298 decks +7% synergy
Entomb
25% of 649 decks +18% synergy
Vampiric Tutor
23% of 649 decks +5% synergy
Withering Torment
20% of 40 decks +1% synergy
Fierce Guardianship
18% of 637 decks +0% synergy
Mana Drain
18% of 649 decks +3% synergy
Arcane Denial
17% of 649 decks -2% synergy
First Day of Class
16% of 290 decks +16% synergy
Dovin's Veto
16% of 38 decks -3% synergy
Anguished Unmaking
16% of 38 decks -8% synergy
Village Rites
16% of 635 decks +6% synergy
Crop Rotation
15% of 300 decks +5% synergy
An Offer You Can't Refuse
15% of 604 decks -6% synergy
Untimely Malfunction
14% of 21 decks -2% synergy
Void Rend
14% of 36 decks -1% synergy
Deflecting Swat
14% of 292 decks -3% synergy
Swan Song
14% of 649 decks -3% synergy
Deadly Dispute
13% of 621 decks +2% synergy
Negate
13% of 649 decks -10% synergy
Act of Aggression
12% of 298 decks +12% synergy
Heroic Intervention
11% of 300 decks -19% synergy
Bedevil
11% of 297 decks -4% synergy
Fell the Profane
11% of 149 decks -1% synergy
Beast Within
11% of 300 decks -28% synergy
Silence
11% of 38 decks +4% synergy
Generous Gift
11% of 38 decks -15% synergy
Dark Ritual
9% of 649 decks -13% synergy
Rakdos Charm
8% of 298 decks -6% synergy
Deadly Rollick
8% of 637 decks -3% synergy
Sink into Stupor
8% of 149 decks -5% synergy
Worldly Tutor
8% of 300 decks -6% synergy
Strix Serenade
7% of 149 decks +1% synergy
Feign Death
7% of 621 decks +5% synergy
Plumb the Forbidden
7% of 628 decks +4% synergy
Harrow
7% of 300 decks -3% synergy
Fact or Fiction
7% of 649 decks +0% synergy
Flare of Denial
6% of 156 decks +3% synergy
Mystical Tutor
6% of 649 decks -9% synergy
Brainstorm
6% of 649 decks -15% synergy
Malakir Rebirth
6% of 635 decks -2% synergy
Lethal Scheme
6% of 604 decks +4% synergy
Force of Will
6% of 649 decks -5% synergy
Sorceries
Life from the Loam
46% of 300 decks +42% synergy
Mark of Mutiny
34% of 298 decks +34% synergy
Vandalblast
34% of 298 decks +17% synergy
Toxic Deluge
31% of 649 decks +14% synergy
Demonic Tutor
30% of 649 decks +8% synergy
Idyllic Tutor
26% of 38 decks +21% synergy
Reanimate
26% of 649 decks +10% synergy
Mob Rule
25% of 297 decks +24% synergy
Buried Alive
22% of 649 decks +16% synergy
Diabolic Intent
22% of 649 decks +13% synergy
Victimize
21% of 649 decks +9% synergy
Living Death
20% of 649 decks +15% synergy
Feed the Swarm
20% of 635 decks +2% synergy
Damnation
19% of 649 decks +11% synergy
Replenish
18% of 38 decks +17% synergy
Wrath of God
18% of 38 decks +12% synergy
Sevinne's Reclamation
16% of 38 decks +9% synergy
Insurrection
16% of 298 decks +14% synergy
Mass Mutiny
15% of 298 decks +15% synergy
Cultivate
14% of 300 decks -32% synergy
Resurgent Belief
14% of 36 decks +12% synergy
Farewell
14% of 36 decks +0% synergy
Seize the Spotlight
14% of 289 decks +12% synergy
Supreme Verdict
13% of 38 decks -1% synergy
Nature's Lore
13% of 300 decks -19% synergy
Farseek
13% of 300 decks -21% synergy
Windfall
13% of 649 decks -0% synergy
Damn
11% of 36 decks -5% synergy
Three Visits
11% of 300 decks -14% synergy
Fractured Identity
11% of 38 decks +9% synergy
Jeska's Will
9% of 291 decks -8% synergy
Villainous Wealth
9% of 300 decks +1% synergy
Last One Standing
8% of 297 decks +7% synergy
Rite of Oblivion
8% of 36 decks +5% synergy
Kari Zev's Expertise
8% of 297 decks +7% synergy
Act of Treason
8% of 298 decks +7% synergy
Kodama's Reach
8% of 300 decks -24% synergy
Culling Ritual
8% of 288 decks -3% synergy
Bala Ged Recovery
7% of 294 decks -2% synergy
Grim Tutor
7% of 649 decks +3% synergy
Chain Reaction
7% of 298 decks +3% synergy
Faithless Looting
7% of 298 decks -10% synergy
Slave of Bolas
7% of 298 decks +6% synergy
Dread Return
6% of 649 decks +1% synergy
Furnace Reins
6% of 229 decks +5% synergy
Press into Service
6% of 297 decks +6% synergy
Agadeem's Awakening
6% of 635 decks +2% synergy
Unmarked Grave
6% of 627 decks +3% synergy
Wave Goodbye
6% of 245 decks +3% synergy
Rampant Growth
6% of 300 decks -29% synergy
Utility Artifacts
Phyrexian Altar
51% of 649 decks +47% synergy
Lightning Greaves
50% of 649 decks +25% synergy
Birthing Pod
28% of 300 decks +26% synergy
Skullclamp
25% of 649 decks +13% synergy
Swiftfoot Boots
25% of 649 decks -3% synergy
The Ozolith
21% of 637 decks +17% synergy
Matzalantli, the Great Door
18% of 268 decks +16% synergy
Perpetual Timepiece
17% of 648 decks +16% synergy
Mesmeric Orb
17% of 649 decks +16% synergy
Conduit of Worlds
17% of 204 decks +10% synergy
Andúril, Narsil Reforged
15% of 299 decks +14% synergy
Wayfarer's Bauble
13% of 649 decks +3% synergy
Agatha's Soul Cauldron
12% of 322 decks +11% synergy
Aether Spellbomb
10% of 649 decks +8% synergy
Nevinyrral's Disk
10% of 649 decks +8% synergy
Bolas's Citadel
9% of 648 decks -0% synergy
The Great Henge
9% of 298 decks -1% synergy
Expedition Map
9% of 649 decks +5% synergy
Crucible of Worlds
8% of 649 decks +6% synergy
Palantír of Orthanc
8% of 351 decks +7% synergy
The One Ring
8% of 436 decks -1% synergy
Blasting Station
6% of 649 decks +6% synergy
Spawning Pit
6% of 649 decks +5% synergy
Desecrated Tomb
6% of 648 decks +5% synergy
Mindslaver
5% of 649 decks +5% synergy
Nihil Spellbomb
5% of 649 decks +4% synergy
Enchantments
Rhythm of the Wild
50% of 6 decks +27% synergy
Delaying Shield
45% of 38 decks +45% synergy
Rhystic Study
42% of 649 decks +14% synergy
Nine Lives
41% of 37 decks +40% synergy
Mystic Remora
41% of 649 decks +23% synergy
Kaya's Ghostform
38% of 648 decks +34% synergy
Animate Dead
37% of 649 decks +28% synergy
Unspeakable Symbol
36% of 649 decks +36% synergy
Thran Vigil
34% of 546 decks +34% synergy
Greater Auramancy
34% of 38 decks +33% synergy
Trouble in Pairs
29% of 17 decks +22% synergy
Ghostly Prison
26% of 38 decks +15% synergy
Smothering Tithe
26% of 38 decks +1% synergy
Walk-In Closet // Forgotten Cellar
25% of 12 decks +11% synergy
Secrets of the Dead
24% of 649 decks +23% synergy
Exploration
23% of 300 decks +15% synergy
Greater Good
22% of 300 decks +17% synergy
Ripples of Undeath
21% of 129 decks +15% synergy
Defense of the Heart
19% of 300 decks +17% synergy
Seal of Removal
19% of 649 decks +18% synergy
Grave Pact
18% of 649 decks +14% synergy
Inner Sanctum
18% of 38 decks +18% synergy
Celestial Convergence
18% of 38 decks +18% synergy
Dictate of Erebos
18% of 649 decks +14% synergy
Sylvan Library
18% of 300 decks +6% synergy
Into the Pit
17% of 30 decks +11% synergy
Warstorm Surge
16% of 298 decks +11% synergy
Force Bubble
16% of 38 decks +16% synergy
Aura of Silence
16% of 38 decks +13% synergy
Darksteel Mutation
16% of 38 decks +10% synergy
Kenrith's Transformation
15% of 298 decks +9% synergy
Necromancy
15% of 649 decks +12% synergy
Seal from Existence
14% of 28 decks +14% synergy
Grasp of Fate
13% of 38 decks +10% synergy
Unable to Scream
12% of 40 decks +9% synergy
Phyrexian Arena
12% of 649 decks -3% synergy
All Will Be One
12% of 240 decks +9% synergy
Journey to Eternity
12% of 300 decks +8% synergy
Grave Betrayal
11% of 649 decks +10% synergy
Martyr's Cause
11% of 38 decks +10% synergy
Blind Obedience
11% of 38 decks +4% synergy
The Meathook Massacre
10% of 621 decks +5% synergy
Survival of the Fittest
10% of 300 decks +9% synergy
Sultai Ascendancy
10% of 300 decks +9% synergy
Insidious Roots
10% of 92 decks +1% synergy
Feast on the Fallen
10% of 648 decks +9% synergy
Impact Tremors
9% of 297 decks -0% synergy
Pattern of Rebirth
9% of 300 decks +8% synergy
Elephant Grass
9% of 300 decks +8% synergy
Seal of Doom
8% of 649 decks +8% synergy
Battles
Planeswalkers
Ashiok, Dream Render
27% of 648 decks +23% synergy
Oko, Thief of Crowns
25% of 298 decks +19% synergy
Tamiyo, Collector of Tales
21% of 300 decks +19% synergy
Wrenn and Realmbreaker
16% of 172 decks +14% synergy
Jace, Wielder of Mysteries
15% of 648 decks +11% synergy
Geyadrone Dihada
9% of 290 decks +7% synergy
Teferi, Time Raveler
8% of 38 decks +1% synergy
Grist, the Hunger Tide
7% of 287 decks +3% synergy
Liliana, Dreadhorde General
6% of 648 decks +2% synergy
Utility Lands
Urborg, Tomb of Yawgmoth
41% of 649 decks +31% synergy
Phyrexian Tower
39% of 649 decks +31% synergy
Hall of Heliod's Generosity
37% of 38 decks +30% synergy
Bojuka Bog
34% of 649 decks +3% synergy
Boseiju, Who Endures
33% of 273 decks +14% synergy
Shifting Woodland
32% of 65 decks +23% synergy
High Market
31% of 649 decks +28% synergy
Command Beacon
29% of 648 decks +25% synergy
Reliquary Tower
23% of 649 decks -6% synergy
Takenuma, Abandoned Mire
19% of 608 decks +8% synergy
Strip Mine
19% of 649 decks +16% synergy
Yavimaya, Cradle of Growth
18% of 627 decks +9% synergy
Forge of Heroes
18% of 648 decks +17% synergy
Ancient Tomb
17% of 649 decks +6% synergy
Otawara, Soaring City
16% of 608 decks -1% synergy
Cabal Coffers
16% of 649 decks +5% synergy
Field of the Dead
15% of 644 decks +12% synergy
Spymaster's Vault
13% of 149 decks +9% synergy
Glacial Chasm
12% of 649 decks +12% synergy
Arena of Glory
11% of 54 decks +2% synergy
Urza's Saga
10% of 627 decks +3% synergy
Dakmor Salvage
9% of 649 decks +7% synergy
The Black Gate
8% of 338 decks +4% synergy
Lotus Field
8% of 644 decks +6% synergy
Drannith Ruins
7% of 381 decks +7% synergy
Ghost Quarter
7% of 649 decks +5% synergy
Nesting Grounds
6% of 637 decks +5% synergy
Cephalid Coliseum
6% of 649 decks +3% synergy
Tyrite Sanctum
6% of 631 decks +4% synergy
Temple of the False God
6% of 649 decks -4% synergy
Gaea's Cradle
6% of 300 decks +0% synergy
Wasteland
6% of 649 decks +4% synergy
Tranquil Thicket
6% of 300 decks +2% synergy
Dark Depths
6% of 649 decks +4% synergy
Mana Artifacts
Sol Ring
94% of 649 decks +9% synergy
Arcane Signet
81% of 641 decks +9% synergy
Talisman of Indulgence
56% of 298 decks +30% synergy
Talisman of Creativity
52% of 296 decks +23% synergy
Rakdos Signet
45% of 298 decks +15% synergy
Izzet Signet
39% of 298 decks +11% synergy
Talisman of Dominance
37% of 649 decks +5% synergy
Azorius Signet
34% of 38 decks +8% synergy
Orzhov Signet
34% of 38 decks +7% synergy
Lotus Petal
31% of 649 decks +24% synergy
Dimir Signet
30% of 649 decks +1% synergy
Talisman of Hierarchy
29% of 38 decks +4% synergy
Fellwar Stone
22% of 649 decks +1% synergy
Talisman of Progress
21% of 38 decks -2% synergy
Chromatic Lantern
17% of 649 decks +7% synergy
Golgari Signet
16% of 300 decks +4% synergy
Relic of Sauron
16% of 178 decks +5% synergy
Commander's Sphere
13% of 648 decks -2% synergy
Simic Signet
13% of 300 decks -2% synergy
Mana Crypt
13% of 649 decks +4% synergy
Jeweled Lotus
10% of 635 decks +5% synergy
Talisman of Resilience
10% of 299 decks -1% synergy
Talisman of Curiosity
8% of 299 decks -4% synergy
Thought Vessel
7% of 648 decks -10% synergy
Mana Vault
7% of 649 decks +0% synergy
Mind Stone
6% of 649 decks -11% synergy
Lion's Eye Diamond
6% of 649 decks +4% synergy
Lands
Command Tower
92% of 649 decks +19% synergy
Overgrown Tomb
77% of 300 decks +35% synergy
Breeding Pool
71% of 300 decks +30% synergy
Watery Grave
69% of 649 decks +28% synergy
Zagoth Triome
64% of 295 decks +34% synergy
Steam Vents
64% of 298 decks +25% synergy
Blood Crypt
61% of 298 decks +22% synergy
Hallowed Fountain
61% of 38 decks +20% synergy
Godless Shrine
58% of 38 decks +17% synergy
Xander's Lounge
56% of 289 decks +29% synergy
Raffine's Tower
56% of 36 decks +28% synergy
Shivan Reef
55% of 298 decks +29% synergy
Sulfurous Springs
51% of 298 decks +31% synergy
Crumbling Necropolis
50% of 298 decks +19% synergy
Undergrowth Stadium
50% of 294 decks +24% synergy
The World Tree
50% of 6 decks +17% synergy
Woodland Cemetery
50% of 300 decks +22% synergy
Polluted Delta
49% of 649 decks +38% synergy
Exotic Orchard
49% of 649 decks +14% synergy
Dragonskull Summit
48% of 298 decks +17% synergy
Training Center
48% of 291 decks +20% synergy
Rejuvenating Springs
48% of 294 decks +19% synergy
Hinterland Harbor
46% of 300 decks +19% synergy
Sulfur Falls
44% of 298 decks +13% synergy
Luxury Suite
43% of 297 decks +17% synergy
Vault of Champions
43% of 37 decks +17% synergy
Drowned Catacomb
42% of 649 decks +16% synergy
Morphic Pool
40% of 648 decks +14% synergy
Sea of Clouds
39% of 38 decks +13% synergy
Spara's Headquarters
38% of 8 decks +6% synergy
Underground Mortuary
36% of 102 decks +20% synergy
Underground River
36% of 649 decks +17% synergy
Opulent Palace
35% of 300 decks +8% synergy
Verdant Catacombs
34% of 649 decks +23% synergy
Arcane Sanctum
34% of 38 decks +7% synergy
Hedge Maze
33% of 102 decks +19% synergy
Brushland
33% of 9 decks +17% synergy
Llanowar Wastes
33% of 300 decks +8% synergy
Temple Garden
33% of 9 decks -7% synergy
Misty Rainforest
32% of 649 decks +20% synergy
Tundra
32% of 38 decks +18% synergy
Yavimaya Coast
31% of 300 decks +4% synergy
Blazemire Verge
30% of 27 decks +9% synergy
Sunken Hollow
29% of 648 decks -6% synergy
Smoldering Marsh
28% of 297 decks -4% synergy
Meticulous Archive
28% of 18 decks +17% synergy
Shadowy Backstreet
28% of 18 decks +15% synergy
Scrubland
26% of 38 decks +13% synergy
Deathcap Glade
26% of 280 decks +12% synergy
Bloodstained Mire
26% of 649 decks +15% synergy