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.

Top Commanders (2)
Marchesa, the Black Rose
3.40% of 8871 decks 302 decks
Muldrotha, the Gravetide
1.80% of 14884 decks 268 decks
New Cards (2)
Satoru, the Infiltrator
67% of 15 decks +65% synergy
Rakdos, the Muscle
42% of 12 decks +40% synergy
High Synergy Cards (10)
Flayer of the Hatebound
81% of 327 decks +81% synergy
Solemnity
76% of 33 decks +75% synergy
Kitchen Finks
75% of 8 decks +75% synergy
Spore Frog
76% of 289 decks +75% synergy
Luminous Broodmoth
75% of 32 decks +74% synergy
Pernicious Deed
71% of 289 decks +70% synergy
Uncivil Unrest
70% of 165 decks +69% synergy
Goblin Bombardment
72% of 327 decks +69% synergy
Eternal Witness
78% of 289 decks +67% synergy
Seal of Primordium
67% of 289 decks +67% synergy
Top Cards (10)
Sakura-Tribe Elder
74% of 289 decks +65% synergy
Ashnod's Altar
67% of 655 decks +60% synergy
Glen Elendra Archmage
66% of 655 decks +65% synergy
Blasphemous Act
65% of 327 decks +49% synergy
Good-Fortune Unicorn
62% of 8 decks +62% synergy
Haywire Mite
60% of 164 decks +58% synergy
Sneak Attack
57% of 327 decks +56% synergy
Phyrexian Unlife
55% of 33 decks +54% synergy
World Shaper
53% of 289 decks +51% synergy
Viscera Seer
53% of 655 decks +47% synergy
Creatures (50)
Baleful Strix
52% of 655 decks +48% synergy
Underrealm Lich
52% of 289 decks +51% synergy
Heartmender
50% of 8 decks +50% synergy
Safehold Elite
50% of 8 decks +50% synergy
Solemn Simulacrum
47% of 655 decks +33% synergy
The Gitrog Monster
47% of 289 decks +46% synergy
Birds of Paradise
45% of 289 decks +33% synergy
Cankerbloom
44% of 112 decks +40% synergy
Carrion Feeder
44% of 655 decks +41% synergy
Grumgully, the Generous
43% of 7 decks +42% synergy
Dockside Extortionist
42% of 322 decks +34% synergy
Mulldrifter
41% of 655 decks +37% synergy
Legate Lanius, Caesar's Ace
40% of 15 decks +39% synergy
Mahadi, Emporium Master
39% of 276 decks +38% synergy
Dauthi Voidwalker
39% of 622 decks +34% synergy
Juri, Master of the Revue
38% of 317 decks +37% synergy
Juniper Order Ranger
38% of 8 decks +37% synergy
Feral Ghoul
38% of 24 decks +34% synergy
Grim Haruspex
36% of 655 decks +33% synergy
Braids, Arisen Nightmare
35% of 455 decks +31% synergy
Uro, Titan of Nature's Wrath
35% of 288 decks +34% synergy
Plaguecrafter
35% of 653 decks +32% synergy
Hermit Druid
35% of 289 decks +34% synergy
Zealous Conscripts
34% of 327 decks +33% synergy
Scorn-Blade Berserker
33% of 253 decks +33% synergy
Yahenni, Undying Partisan
33% of 654 decks +31% synergy
Satyr Wayfinder
32% of 289 decks +31% synergy
Elas il-Kor, Sadistic Pilgrim
32% of 19 decks +29% synergy
Iron Apprentice
31% of 570 decks +30% synergy
Caustic Caterpillar
30% of 289 decks +29% synergy
Siren Stormtamer
30% of 654 decks +29% synergy
Gravebreaker Lamia
30% of 644 decks +29% synergy
Thundering Raiju
29% of 308 decks +28% synergy
Puppeteer Clique
28% of 655 decks +27% synergy
Danny Pink
28% of 134 decks +27% synergy
Kithkin Spellduster
27% of 33 decks +27% synergy
Imperial Recruiter
27% of 327 decks +24% synergy
Atsushi, the Blazing Sky
27% of 309 decks +26% synergy
Meren of Clan Nel Toth
27% of 289 decks +26% synergy
Drana, Liberator of Malakir
27% of 655 decks +25% synergy
Sidisi, Undead Vizier
26% of 655 decks +25% synergy
Delighted Halfling
26% of 76 decks +19% synergy
Deathrite Shaman
26% of 289 decks +24% synergy
Ramunap Excavator
26% of 289 decks +23% synergy
Dryad of the Ilysian Grove
26% of 286 decks +23% synergy
Herald of Secret Streams
26% of 654 decks +25% synergy
Fiend Artisan
26% of 285 decks +25% synergy
Springbloom Druid
26% of 289 decks +24% synergy
Spark Double
25% of 653 decks +22% synergy
Dack's Duplicate
25% of 327 decks +25% synergy
Instants (50)
Swords to Plowshares
52% of 33 decks +23% synergy
Chaos Warp
49% of 327 decks +33% synergy
Path to Exile
45% of 33 decks +26% synergy
Cyclonic Rift
41% of 655 decks +27% synergy
Counterspell
37% of 655 decks +16% synergy
Assassin's Trophy
35% of 289 decks +28% synergy
Enlightened Tutor
33% of 33 decks +25% synergy
Dovin's Veto
30% of 33 decks +26% synergy
Terminate
27% of 327 decks +22% synergy
Entomb
24% of 655 decks +21% synergy
Vampiric Tutor
22% of 655 decks +12% synergy
Void Rend
21% of 28 decks +19% synergy
Fierce Guardianship
19% of 641 decks +10% synergy
Mana Drain
18% of 655 decks +11% synergy
Teferi's Protection
18% of 33 decks +9% synergy
Arcane Denial
18% of 655 decks +9% synergy
Act of Aggression
16% of 327 decks +16% synergy
Silence
15% of 33 decks +12% synergy
Generous Gift
15% of 33 decks +3% synergy
Deflecting Swat
14% of 319 decks +7% synergy
Village Rites
14% of 640 decks +9% synergy
Swan Song
14% of 655 decks +6% synergy
Beast Within
14% of 289 decks -5% synergy
First Day of Class
14% of 313 decks +14% synergy
Negate
13% of 655 decks +2% synergy
An Offer You Can't Refuse
13% of 556 decks +3% synergy
Crop Rotation
12% of 289 decks +8% synergy
Anguished Unmaking
12% of 33 decks +7% synergy
Deadly Dispute
12% of 614 decks +6% synergy
Bedevil
11% of 325 decks +8% synergy
Heroic Intervention
11% of 289 decks -3% synergy
Esper Charm
9% of 33 decks +9% synergy
Angel's Grace
9% of 33 decks +8% synergy
Despark
9% of 33 decks +5% synergy
Malakir Rebirth
8% of 640 decks +4% synergy
Deadly Rollick
8% of 641 decks +3% synergy
Dark Ritual
8% of 655 decks -3% synergy
Rakdos Charm
8% of 327 decks +4% synergy
Harrow
8% of 289 decks +3% synergy
Plumb the Forbidden
7% of 628 decks +5% synergy
Feign Death
7% of 615 decks +6% synergy
Bitter Triumph
7% of 76 decks +3% synergy
Fact or Fiction
7% of 655 decks +3% synergy
Brainstorm
7% of 655 decks -5% synergy
Entish Restoration
6% of 62 decks +2% synergy
Worldly Tutor
6% of 289 decks -0% synergy
Reality Shift
6% of 655 decks +1% synergy
Mystical Tutor
6% of 655 decks -2% synergy
Flame of Anor
6% of 116 decks +5% synergy
Lethal Scheme
5% of 556 decks +5% synergy
Sorceries (50)
Life from the Loam
46% of 289 decks +45% synergy
Mark of Mutiny
39% of 327 decks +39% synergy
Vandalblast
35% of 327 decks +27% synergy
Demonic Tutor
32% of 655 decks +20% synergy
Supreme Verdict
30% of 33 decks +27% synergy
Toxic Deluge
30% of 655 decks +22% synergy
Mob Rule
27% of 327 decks +26% synergy
Reanimate
25% of 655 decks +18% synergy
Idyllic Tutor
24% of 33 decks +22% synergy
Buried Alive
22% of 655 decks +19% synergy
Living Death
22% of 655 decks +19% synergy
Feed the Swarm
21% of 640 decks +12% synergy
Victimize
20% of 655 decks +15% synergy
Mass Mutiny
20% of 327 decks +19% synergy
Damnation
20% of 655 decks +15% synergy
Diabolic Intent
19% of 655 decks +14% synergy
Insurrection
17% of 327 decks +16% synergy
Seize the Spotlight
16% of 300 decks +15% synergy
Wrath of God
15% of 33 decks +12% synergy
Cultivate
14% of 289 decks -8% synergy
Damn
13% of 30 decks +9% synergy
Windfall
13% of 655 decks +6% synergy
Nature's Lore
13% of 289 decks -2% synergy
Farseek
12% of 289 decks -3% synergy
Fractured Identity
12% of 33 decks +12% synergy
Replenish
12% of 33 decks +12% synergy
Sevinne's Reclamation
12% of 33 decks +9% synergy
Jeska's Will
12% of 317 decks +3% synergy
Villainous Wealth
10% of 289 decks +9% synergy
Bala Ged Recovery
10% of 284 decks +6% synergy
Three Visits
10% of 289 decks -2% synergy
Kari Zev's Expertise
10% of 326 decks +9% synergy
Act of Treason
10% of 327 decks +9% synergy
Squirming Emergence
9% of 32 decks +8% synergy
Wave Goodbye
9% of 98 decks +7% synergy
Last One Standing
9% of 326 decks +9% synergy
Rise of the Witch-king
9% of 69 decks +7% synergy
Kodama's Reach
9% of 289 decks -7% synergy
Culling Ritual
9% of 279 decks +6% synergy
Slave of Bolas
8% of 327 decks +8% synergy
Faithless Looting
8% of 327 decks -0% synergy
Dread Return
7% of 655 decks +5% synergy
Grim Tutor
7% of 655 decks +4% synergy
Furnace Reins
7% of 167 decks +6% synergy
Unmarked Grave
7% of 626 decks +5% synergy
Press into Service
6% of 327 decks +6% synergy
Splendid Reclamation
6% of 289 decks +4% synergy
Chain Reaction
6% of 327 decks +3% synergy
Torment of Hailfire
6% of 654 decks +3% synergy
Agadeem's Awakening
6% of 640 decks +4% synergy
Utility Artifacts (22)
Lightning Greaves
52% of 655 decks +27% synergy
Phyrexian Altar
49% of 655 decks +45% synergy
Andúril, Narsil Reforged
32% of 95 decks +30% synergy
Skullclamp
30% of 655 decks +17% synergy
Swiftfoot Boots
28% of 655 decks -1% synergy
Birthing Pod
27% of 289 decks +25% synergy
The Ozolith
24% of 642 decks +20% synergy
Matzalantli, the Great Door
20% of 115 decks +18% synergy
Conduit of Worlds
20% of 128 decks +16% synergy
Perpetual Timepiece
16% of 655 decks +15% synergy
Mesmeric Orb
16% of 655 decks +15% synergy
Wayfarer's Bauble
15% of 655 decks +4% synergy
Agatha's Soul Cauldron
14% of 153 decks +12% synergy
Palantír of Orthanc
12% of 200 decks +10% synergy
Bolas's Citadel
11% of 653 decks +5% synergy
Nevinyrral's Disk
11% of 655 decks +9% synergy
Expedition Map
10% of 655 decks +6% synergy
Aether Spellbomb
9% of 655 decks +9% synergy
The Great Henge
8% of 289 decks +3% synergy
The One Ring
8% of 280 decks -1% synergy
Crucible of Worlds
7% of 655 decks +5% synergy
Desecrated Tomb
5% of 654 decks +5% synergy
Enchantments (50)
Rhythm of the Wild
43% of 7 decks +38% synergy
Rhystic Study
42% of 655 decks +28% synergy
Unspeakable Symbol
41% of 655 decks +41% synergy
Nine Lives
41% of 32 decks +40% synergy
Mystic Remora
40% of 655 decks +32% synergy
Seal from Existence
40% of 10 decks +40% synergy
Animate Dead
37% of 655 decks +32% synergy
Delaying Shield
36% of 33 decks +36% synergy
Kaya's Ghostform
36% of 653 decks +33% synergy
Thran Vigil
35% of 400 decks +35% synergy
Greater Auramancy
33% of 33 decks +33% synergy
Ghostly Prison
27% of 33 decks +22% synergy
Secrets of the Dead
22% of 655 decks +22% synergy
Exploration
22% of 289 decks +18% synergy
Grasp of Fate
21% of 33 decks +20% synergy
Smothering Tithe
21% of 33 decks +9% synergy
Greater Good
21% of 289 decks +19% synergy
Dictate of Erebos
21% of 655 decks +18% synergy
Insidious Roots
19% of 21 decks +17% synergy
Sylvan Library
18% of 289 decks +12% synergy
Seal of Removal
18% of 655 decks +18% synergy
Grave Pact
18% of 655 decks +16% synergy
Defense of the Heart
17% of 289 decks +16% synergy
Warstorm Surge
17% of 327 decks +14% synergy
Kenrith's Transformation
15% of 289 decks +12% synergy
Force Bubble
15% of 33 decks +15% synergy
Celestial Convergence
15% of 33 decks +15% synergy
Aura of Silence
15% of 33 decks +14% synergy
All Will Be One
15% of 177 decks +13% synergy
Necromancy
15% of 655 decks +13% synergy
Phyrexian Arena
15% of 655 decks +7% synergy
Journey to Eternity
13% of 289 decks +12% synergy
Grave Betrayal
13% of 655 decks +12% synergy
Black Market Connections
12% of 486 decks +6% synergy
Inner Sanctum
12% of 33 decks +12% synergy
Feast on the Fallen
12% of 655 decks +12% synergy
Survival of the Fittest
11% of 289 decks +10% synergy
Sultai Ascendancy
11% of 289 decks +10% synergy
The Meathook Massacre
10% of 612 decks +7% synergy
Steel of the Godhead
9% of 33 decks +9% synergy
Authority of the Consuls
9% of 33 decks +7% synergy
All That Glitters
9% of 33 decks +7% synergy
Darksteel Mutation
9% of 33 decks +6% synergy
Cathars' Crusade
9% of 33 decks +6% synergy
Land Tax
9% of 33 decks +6% synergy
Phyrexian Reclamation
9% of 655 decks +7% synergy
Elephant Grass
9% of 289 decks +9% synergy
Pattern of Rebirth
8% of 289 decks +8% synergy
Impact Tremors
8% of 327 decks +4% synergy
Seal of Doom
8% of 655 decks +8% synergy
Battles (2)
Invasion of Ikoria
7% of 87 decks +4% synergy
Invasion of Amonkhet
6% of 253 decks +5% synergy
Planeswalkers (10)
Oko, Thief of Crowns
26% of 289 decks +25% synergy
Ashiok, Dream Render
26% of 653 decks +24% synergy
Tamiyo, Collector of Tales
24% of 289 decks +24% synergy
Wrenn and Realmbreaker
24% of 97 decks +22% synergy
Jace, Wielder of Mysteries
13% of 653 decks +11% synergy
Geyadrone Dihada
12% of 312 decks +11% synergy
Grist, the Hunger Tide
7% of 277 decks +6% synergy
Teferi, Master of Time
7% of 640 decks +5% synergy
Liliana, Dreadhorde General
6% of 653 decks +4% synergy
Tyvar, Jubilant Brawler
6% of 119 decks +5% synergy
Utility Lands (33)
Phyrexian Tower
40% of 655 decks +35% synergy
Urborg, Tomb of Yawgmoth
39% of 655 decks +29% synergy
Bojuka Bog
35% of 655 decks +19% synergy
Boseiju, Who Endures
34% of 252 decks +24% synergy
High Market
32% of 655 decks +29% synergy
Hall of Heliod's Generosity
30% of 33 decks +27% synergy
Command Beacon
29% of 655 decks +24% synergy
Reliquary Tower
22% of 655 decks -7% synergy
Takenuma, Abandoned Mire
19% of 587 decks +13% synergy
Strip Mine
19% of 655 decks +15% synergy
Forge of Heroes
18% of 653 decks +17% synergy
Ancient Tomb
17% of 655 decks +6% synergy
Cabal Coffers
16% of 655 decks +10% synergy
Yavimaya, Cradle of Growth
16% of 625 decks +6% synergy
Otawara, Soaring City
14% of 588 decks +6% synergy
Field of the Dead
14% of 651 decks +10% synergy
Glacial Chasm
13% of 655 decks +12% synergy
The Black Gate
10% of 188 decks +8% synergy
Dakmor Salvage
9% of 655 decks +8% synergy
Urza's Saga
9% of 618 decks +1% synergy
Ghost Quarter
9% of 655 decks +6% synergy
Lotus Field
8% of 651 decks +6% synergy
Drannith Ruins
8% of 222 decks +7% synergy
Argoth, Sanctum of Nature
7% of 134 decks +6% synergy
Nesting Grounds
7% of 641 decks +6% synergy
Tyrite Sanctum
7% of 634 decks +5% synergy
Tranquil Thicket
7% of 289 decks +5% synergy
Gaea's Cradle
7% of 289 decks +4% synergy
Cephalid Coliseum
6% of 655 decks +5% synergy
Temple of the False God
6% of 655 decks -3% synergy
Wasteland
5% of 655 decks +4% synergy
Rogue's Passage
5% of 655 decks -13% synergy
Alchemist's Refuge
5% of 289 decks +4% synergy
Mana Artifacts (25)
Sol Ring
94% of 655 decks +9% synergy
Arcane Signet
80% of 647 decks +10% synergy
Talisman of Indulgence
59% of 327 decks +53% synergy
Talisman of Creativity
53% of 323 decks +46% synergy
Rakdos Signet
47% of 327 decks +40% synergy
Izzet Signet
44% of 327 decks +37% synergy
Azorius Signet
42% of 33 decks +36% synergy
Talisman of Dominance
38% of 655 decks +31% synergy
Orzhov Signet
36% of 33 decks +30% synergy
Talisman of Hierarchy
33% of 33 decks +28% synergy
Dimir Signet
33% of 655 decks +24% synergy
Lotus Petal
28% of 655 decks +21% synergy
Talisman of Progress
24% of 33 decks +20% synergy
Fellwar Stone
24% of 655 decks +3% synergy
Golgari Signet
19% of 289 decks +16% synergy
Relic of Sauron
18% of 115 decks +17% synergy
Chromatic Lantern
17% of 655 decks +8% synergy
Simic Signet
17% of 289 decks +13% synergy
Mana Crypt
16% of 655 decks +5% synergy
Commander's Sphere
15% of 655 decks -2% synergy
Jeweled Lotus
13% of 637 decks +5% synergy
Talisman of Resilience
9% of 289 decks +7% synergy
Talisman of Curiosity
7% of 289 decks +5% synergy
Thought Vessel
7% of 655 decks -9% synergy
Mind Stone
7% of 655 decks -11% synergy
Lands (50)
Command Tower
92% of 655 decks +19% synergy
Overgrown Tomb
74% of 289 decks +65% synergy
Breeding Pool
72% of 289 decks +62% synergy
Watery Grave
67% of 655 decks +56% synergy
Zagoth Triome
65% of 285 decks +62% synergy
Raffine's Tower
64% of 28 decks +60% synergy
Underground Mortuary
63% of 19 decks +58% synergy
Steam Vents
62% of 327 decks +53% synergy
Xander's Lounge
59% of 300 decks +55% synergy
Blood Crypt
58% of 327 decks +49% synergy
Ziatora's Proving Ground
57% of 7 decks +54% synergy
Hallowed Fountain
55% of 33 decks +45% synergy
Godless Shrine
55% of 33 decks +45% synergy
Shivan Reef
53% of 327 decks +47% synergy
Hedge Maze
53% of 19 decks +48% synergy
Undergrowth Stadium
52% of 282 decks +46% synergy
Dragonskull Summit
51% of 327 decks +45% synergy
Exotic Orchard
50% of 655 decks +15% synergy
The World Tree
50% of 6 decks +48% synergy
Jetmir's Garden
50% of 6 decks +46% synergy
Vault of Champions
50% of 32 decks +44% synergy
Training Center
47% of 317 decks +41% synergy
Woodland Cemetery
47% of 289 decks +42% synergy
Crumbling Necropolis
47% of 327 decks +43% synergy
Luxury Suite
46% of 326 decks +40% synergy
Sea of Clouds
45% of 33 decks +40% synergy
Drowned Catacomb
44% of 655 decks +37% synergy
Polluted Delta
43% of 655 decks +33% synergy
Rejuvenating Springs
43% of 282 decks +37% synergy
Sulfur Falls
43% of 327 decks +37% synergy
Raugrin Triome
43% of 7 decks +40% synergy
Savai Triome
43% of 7 decks +40% synergy
Ketria Triome
43% of 7 decks +39% synergy
Spara's Headquarters
43% of 7 decks +39% synergy
Stomping Ground
43% of 7 decks +34% synergy
Arcane Sanctum
42% of 33 decks +39% synergy
Hinterland Harbor
42% of 289 decks +37% synergy
Sulfurous Springs
42% of 327 decks +38% synergy
Morphic Pool
40% of 654 decks +33% synergy
Indatha Triome
38% of 8 decks +34% synergy
Temple Garden
38% of 8 decks +28% synergy
Opulent Palace
36% of 289 decks +33% synergy
Undercity Sewers
36% of 47 decks +31% synergy
Verdant Catacombs
33% of 655 decks +22% synergy
Llanowar Wastes
33% of 289 decks +28% synergy
Underground River
33% of 655 decks +28% synergy
Yavimaya Coast
32% of 289 decks +27% synergy
Deserted Beach
32% of 28 decks +29% synergy
Misty Rainforest
31% of 655 decks +20% synergy
Smoldering Marsh
31% of 327 decks +24% synergy