Olivia, Mobilized for War
Umbral Collar Zealot
Grim Haruspex

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield.
The persist creature does not have a -1/-1 counter on it.

   Steps

How does this combo work?
1
Activate Umbral Collar Zealot by sacrificing the persist creature.
2
When the persist creature dies, it and Grim Haruspex trigger.
3
Resolve the Grim Haruspex trigger, causing you to draw a card.
4
Resolve the persist creature's trigger, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
5
When the persist creature enters the battlefield, Olivia triggers, putting a +1/+1 counter on the persist creature and causing you to discard a card.
6
Resolve the Umbral Collar Zealot ability.
7
Repeat.

   Results

What do I get from this combo?
Infinite self-discard triggers
Near-infinite ETB
Infinite draw triggers
Infinite looting
Near-infinite LTB
Near-infinite death triggers
Near infinite sacrifice triggers
Near-infinite surveil 1
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Planeswalkers
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Mind Stone
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Dimir Signet
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Liquimetal Torque
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Commander's Sphere
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Lands
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Sulfurous Springs
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53%synergy
Underground River
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61%synergy
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54%synergy
Xander's Lounge
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42%synergy
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42%synergy
Training Center
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41%synergy
Dragonskull Summit
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33%synergy
Haunted Ridge
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39%synergy
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34%synergy
Luxury Suite
56%inclusion5 decks9 decks
31%synergy
Fiery Islet
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Drowned Catacomb
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21%synergy
Crumbling Necropolis
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Sulfur Falls
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15%synergy
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12%synergy
Watery Grave
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9%synergy
Smoldering Marsh
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11%synergy
Blood Crypt
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7%synergy
Seething Landscape
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25%synergy
Graven Cairns
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Scalding Tarn
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22%synergy
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Bloodstained Mire
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22%synergy
Tainted Peak
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Temple of Malice
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20%synergy
Darkwater Catacombs
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18%synergy
Temple of Deceit
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18%synergy
Temple of Epiphany
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Stormcarved Coast
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Opal Palace
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Mount Doom
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16%synergy
Blackcleave Cliffs
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16%synergy
Mana Confluence
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15%synergy
Fabled Passage
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13%synergy
Polluted Delta
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Shadowblood Ridge
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9%synergy
Foreboding Ruins
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7%synergy
Sunken Ruins
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11%synergy
Ferrous Lake
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9%synergy
Cascade Bluffs
17%inclusion1 decks6 decks
3%synergy
Izzet Boilerworks
17%inclusion1 decks6 decks
2%synergy
Dimir Aqueduct
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2%synergy
Shipwreck Marsh
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-2%synergy
Sunken Hollow
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Voldaren Estate
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Lazotep Quarry
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10%synergy
Forbidden Orchard
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9%synergy
Demolition Field
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8%synergy