Emeria Shepherd + Felidar Guardian + Ashnod's Altar
Emeria Shepherd
Felidar Guardian
Ashnod's Altar
Requires
Emeria Shepherd must be on the battlefield.
Felidar Guardian must be in hand.
Ashnod's Altar must be on the battlefield.
You control Plains.
Mana needed: 
Steps
- Cast Felidar Guardian by paying .
- Felidar Guardian enters the battlefield, blinking Plains.
- Emeria Shepherd triggers.
- Holding priority, activate Ashnod's Altar by sacrificing Felidar Guardian, adding .
- Resolve the Emeria Shepherd trigger, returning Felidar Guardian from your graveyard to the battlefield.
- Repeat from step 2.
Results
Infinite colorless mana. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.
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Blade of Selves
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Aetherflux Reservoir
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Portal to Phyrexia
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Wedding Ring
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Expedition Map
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Nim Deathmantle
8% of 262 decks
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Halo Fountain
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Idol of Oblivion
6% of 261 decks
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Ichor Wellspring
6% of 262 decks
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Enchantments
Goblin Bombardment
50% of 16 decks
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Smothering Tithe
41% of 262 decks
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Mystic Remora
40% of 10 decks
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Felidar Retreat
31% of 261 decks
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Cathars' Crusade
31% of 262 decks
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Phyrexian Arena
29% of 14 decks
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Greater Good
26% of 31 decks
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Sylvan Library
26% of 31 decks
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Land Tax
23% of 262 decks
+16% synergy
Animate Dead
21% of 14 decks
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Impact Tremors
19% of 16 decks
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Grasp of Fate
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Blessed Sanctuary
18% of 261 decks
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Touch the Spirit Realm
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Anointed Procession
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Guardian Project
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Trouble in Pairs
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Gift of Immortality
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Far Traveler
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Tocasia's Welcome
15% of 237 decks
+11% synergy
Oblivion Ring
15% of 262 decks
+14% synergy
Ghostly Prison
15% of 262 decks
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Ossification
15% of 183 decks
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Angelic Renewal
14% of 262 decks
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Pattern of Rebirth
13% of 31 decks
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Evolutionary Leap
13% of 31 decks
+11% synergy
Survival of the Fittest
13% of 31 decks
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Aura Shards
13% of 31 decks
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Mirari's Wake
13% of 31 decks
-1% synergy
Authority of the Consuls
12% of 262 decks
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Court of Ardenvale
12% of 94 decks
+10% synergy
Fanatical Devotion
10% of 262 decks
+9% synergy
Earthcraft
10% of 31 decks
+9% synergy
Fecundity
10% of 31 decks
+9% synergy
Defense of the Heart
10% of 31 decks
+7% synergy
Growing Rites of Itlimoc
10% of 31 decks
+4% synergy
Utopia Sprawl
10% of 31 decks
+2% synergy
Doubling Season
10% of 31 decks
+1% synergy
Wild Growth
10% of 31 decks
-1% synergy
Ajani's Welcome
10% of 262 decks
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Banishing Light
10% of 262 decks
+8% synergy
Blind Obedience
9% of 262 decks
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Assemble the Players
9% of 69 decks
+7% synergy
Seal from Existence
8% of 131 decks
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Darksteel Mutation
8% of 262 decks
+2% synergy
Retreat to Emeria
8% of 262 decks
+7% synergy
Smuggler's Share
7% of 254 decks
+5% synergy
Journey to Nowhere
6% of 262 decks
+6% synergy
Cleric Class
6% of 258 decks
+3% synergy
Court of Grace
5% of 260 decks
+2% synergy
Planeswalkers
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35% of 194 decks
+31% synergy
Nahiri, the Harbinger
19% of 16 decks
+18% synergy
Utility Lands
Emeria, the Sky Ruin
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+43% synergy
Nykthos, Shrine to Nyx
37% of 262 decks
+31% synergy
War Room
37% of 260 decks
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Reliquary Tower
36% of 262 decks
+6% synergy
Fountainport
35% of 17 decks
+31% synergy
Eiganjo, Seat of the Empire
26% of 257 decks
+17% synergy
Minas Tirith
23% of 116 decks
+14% synergy
Boseiju, Who Endures
21% of 28 decks
+2% synergy
Bojuka Bog
21% of 14 decks
-9% synergy
Monumental Henge
21% of 34 decks
+17% synergy
Gavony Township
19% of 31 decks
+10% synergy
Castle Ardenvale
17% of 261 decks
+12% synergy
Windbrisk Heights
17% of 262 decks
+13% synergy
High Market
15% of 262 decks
+11% synergy
Ancient Tomb
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+4% synergy
Hall of Heliod's Generosity
14% of 261 decks
+7% synergy
Dryad Arbor
13% of 31 decks
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Command Beacon
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Buried Ruin
11% of 262 decks
+6% synergy
Temple of the False God
11% of 262 decks
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Mistveil Plains
11% of 262 decks
+9% synergy
Ghost Quarter
11% of 262 decks
+8% synergy
Terrain Generator
10% of 262 decks
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Urza's Saga
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Secluded Steppe
10% of 262 decks
+7% synergy
Stirring Wildwood
10% of 31 decks
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Gaea's Cradle
10% of 31 decks
+4% synergy
Strip Mine
9% of 262 decks
+6% synergy
Scavenger Grounds
8% of 262 decks
+5% synergy
The Fair Basilica
8% of 167 decks
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Lotus Field
7% of 261 decks
+6% synergy
Rogue's Passage
7% of 262 decks
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Field of Ruin
6% of 262 decks
+4% synergy
Geier Reach Sanitarium
6% of 262 decks
+3% synergy
Inventors' Fair
6% of 262 decks
+2% synergy
Hidden Courtyard
6% of 85 decks
+5% synergy
Idyllic Grange
6% of 261 decks
+5% synergy
Field of the Dead
6% of 261 decks
+2% synergy
Homeward Path
6% of 262 decks
+4% synergy
Emergence Zone
5% of 261 decks
+3% synergy
Arid Archway
5% of 56 decks
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Karoo
5% of 262 decks
+5% synergy
Mana Artifacts
Sol Ring
93% of 262 decks
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Arcane Signet
61% of 261 decks
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Orzhov Signet
43% of 14 decks
+16% synergy
Talisman of Conviction
38% of 16 decks
+14% synergy
Boros Signet
38% of 16 decks
+14% synergy
Mind Stone
30% of 262 decks
+12% synergy
Thought Vessel
28% of 262 decks
+11% synergy
Selesnya Signet
26% of 31 decks
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Cursed Mirror
25% of 16 decks
+20% synergy
Talisman of Unity
16% of 31 decks
+9% synergy
Fellwar Stone
14% of 262 decks
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Nyx Lotus
13% of 261 decks
+12% synergy
Mana Crypt
11% of 262 decks
+2% synergy
Throne of Eldraine
11% of 94 decks
+8% synergy
Caged Sun
10% of 262 decks
+8% synergy
Marble Diamond
10% of 262 decks
+6% synergy
Jeweled Lotus
10% of 260 decks
+4% synergy
Commander's Sphere
9% of 262 decks
-6% synergy
Mana Vault
6% of 262 decks
-0% synergy
Liquimetal Torque
6% of 258 decks
+2% synergy
Skyclave Relic
5% of 261 decks
+4% synergy
Lands
Godless Shrine
71% of 14 decks
+31% synergy
Sacred Foundry
69% of 16 decks
+33% synergy
Llanowar Wastes
67% of 6 decks
+41% synergy
Overgrown Tomb
67% of 6 decks
+24% synergy
Sunpetal Grove
61% of 31 decks
+38% synergy
Underground Sea
60% of 5 decks
+46% synergy
Temple Garden
58% of 31 decks
+18% synergy
Caves of Koilos
57% of 14 decks
+29% synergy
Canopy Vista
55% of 31 decks
+19% synergy
Lush Portico
50% of 8 decks
+38% synergy
Hallowed Fountain
50% of 10 decks
+9% synergy
Clifftop Retreat
44% of 16 decks
+15% synergy
Isolated Chapel
43% of 14 decks
+15% synergy
Prairie Stream
40% of 10 decks
+6% synergy
Myriad Landscape
36% of 262 decks
+16% synergy
Bountiful Promenade
35% of 31 decks
+11% synergy
Selesnya Sanctuary
32% of 31 decks
+18% synergy
Brushland
32% of 31 decks
+16% synergy
Rugged Prairie
31% of 16 decks
+21% synergy
Battlefield Forge
31% of 16 decks
+6% synergy
Shattered Sanctum
31% of 13 decks
+17% synergy
Glacial Fortress
30% of 10 decks
+4% synergy
Temple of Plenty
29% of 31 decks
+16% synergy
Fortified Village
29% of 31 decks
+14% synergy
Orzhov Basilica
29% of 14 decks
+13% synergy
Overgrown Farmland
29% of 28 decks
+12% synergy
Vault of Champions
29% of 14 decks
+3% synergy
Boros Garrison
25% of 16 decks
+10% synergy
Temple of Triumph
25% of 16 decks
+8% synergy
Spectator Seating
25% of 16 decks
-0% synergy
Savannah
23% of 31 decks
+10% synergy
Concealed Courtyard
21% of 14 decks
+16% synergy
Scrubland
21% of 14 decks
+8% synergy
Command Tower
21% of 262 decks
-53% synergy
Horizon Canopy
19% of 31 decks
+15% synergy
Razorverge Thicket
19% of 31 decks
+15% synergy
Scattered Groves
19% of 31 decks
+11% synergy
Alpine Meadow
19% of 16 decks
+16% synergy
Sunbaked Canyon
19% of 16 decks
+14% synergy
Rustvale Bridge
19% of 16 decks
+13% synergy
Plateau
19% of 16 decks
+6% synergy
Furycalm Snarl
19% of 16 decks
+6% synergy
Radiant Grove
19% of 27 decks
+13% synergy
Sungrass Prairie
16% of 31 decks
+4% synergy
Demolition Field
16% of 237 decks
+13% synergy
Urza's Cave
16% of 44 decks
+12% synergy
Graypelt Refuge
13% of 31 decks
+9% synergy
Wooded Bastion
13% of 31 decks
+9% synergy
Fabled Passage
13% of 261 decks
+3% synergy
Marsh Flats
12% of 262 decks
+1% synergy