Moritte of the Frost
River Kelpie
Altar of Dementia

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield (Moritte of the Frost as a copy of River Kelpie on the battlefield).

   Steps

How does this combo work?
1
Activate Altar of Dementia by sacrificing Moritte of the Frost.
2
When Moritte of the Frost dies, its persist ability triggers, returning it from your graveyard to the battlefield as a copy of River Kelpie with two additional +1/+1 counters on it and a -1/-1 counter on it.
3
Remove one +1/+1 counter and one -1/-1 counter from Moritte of the Frost as a state-based action.
4
When Moritte of the Frost enters the battlefield, it and River Kelpie's first ability triggers, causing you to draw two cards.
5
Resolve the Altar of Dementia ability from step 1, milling target player a number of cards equal to Moritte of the Frost's power at the time of activation.
6
Repeat.

   Results

What do I get from this combo?
Infinite card draw
Infinite draw triggers
Near-infinite death triggers
Near-infinite ETB
Near-infinite LTB
Near-infinite mill
Near-infinite sacrifice triggers
Infinite self-mill
Moritte of the Frost
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Utility Artifacts
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Enchantments
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Battles
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Planeswalkers
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Utility Lands
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17%synergy
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Swarmyard
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18%synergy
Rogue's Passage
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Faceless Haven
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15%synergy
Dark Depths
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14%synergy
Riptide Laboratory
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13%synergy
Scrying Sheets
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13%synergy
Thespian's Stage
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11%synergy
Alchemist's Refuge
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7%synergy
Mystic Sanctuary
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3%synergy
Shifting Woodland
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5%synergy
Frostwalk Bastion
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11%synergy
Sanctum of Eternity
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10%synergy
Cephalid Coliseum
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7%synergy
Buried Ruin
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Command Beacon
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6%synergy
Temple of the False God
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Ancient Tomb
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Mouth of Ronom
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Tyrite Sanctum
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Lotus Field
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Strip Mine
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Mana Artifacts
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-20%synergy
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Coldsteel Heart
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21%synergy
Replicating Ring
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21%synergy
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4%synergy
Fellwar Stone
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Commander's Sphere
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Lands
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13%synergy
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Overgrown Tomb
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34%synergy
Watery Grave
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33%synergy
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Breeding Pool
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12%synergy
Llanowar Wastes
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23%synergy
Woodland Cemetery
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18%synergy
Misty Rainforest
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34%synergy
Rimewood Falls
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40%synergy
Hinterland Harbor
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Yavimaya Coast
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14%synergy
Foreboding Landscape
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29%synergy
Underground Mortuary
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25%synergy
Dimir Aqueduct
38%inclusion3 decks8 decks
23%synergy
Golgari Rot Farm
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21%synergy
Sunken Hollow
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4%synergy
Dreamroot Cascade
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Rejuvenating Springs
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6%synergy
Hedge Maze
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Waterlogged Grove
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18%synergy
Tropical Island
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10%synergy
Flooded Grove
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9%synergy
Simic Growth Chamber
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7%synergy
Verdant Catacombs
22%inclusion10 decks46 decks
11%synergy
Flooded Strand
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10%synergy
Path of Ancestry
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0%synergy
Shimmerdrift Vale
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19%synergy
Barkchannel Pathway
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13%synergy
Wooded Foothills
20%inclusion9 decks46 decks
9%synergy
Windswept Heath
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9%synergy
Polluted Delta
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7%synergy
Evolving Wilds
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-1%synergy
Willowrush Verge
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12%synergy
Prismatic Vista
15%inclusion7 decks46 decks
10%synergy
Scalding Tarn
15%inclusion7 decks46 decks
4%synergy
Vineglimmer Snarl
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4%synergy
Exotic Orchard
15%inclusion7 decks46 decks
-21%synergy
Fabled Passage
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4%synergy
Temple of Mystery
13%inclusion6 decks46 decks
-3%synergy
Botanical Sanctum
11%inclusion5 decks46 decks
7%synergy
Mana Confluence
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4%synergy
Cavern of Souls
11%inclusion5 decks46 decks
4%synergy
Terramorphic Expanse
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-4%synergy
Myriad Landscape
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-5%synergy
Tangled Islet
8.7%inclusion4 decks46 decks
3%synergy
City of Brass
8.7%inclusion4 decks46 decks
1%synergy
Overflowing Basin
8.7%inclusion4 decks46 decks
0%synergy
Littjara Mirrorlake
6.5%inclusion3 decks46 decks
5%synergy