Hero of the Dunes + Fiend Hunter + Ashnod's Altar

Hero of the Dunes
Fiend Hunter
Ashnod's Altar

Requires
Hero of the Dunes must be in exile (exiled by Fiend Hunter). Fiend Hunter must be on the battlefield. Ashnod's Altar must be on the battlefield.
Steps
  1. Activate Ashnod's Altar by sacrificing Fiend Hunter, adding .
  2. When Fiend Hunter dies, its second ability triggers, returning Hero of the Dunes to the battlefield from exile.
  3. When Hero of the Dunes enters the battlefield, it triggers, returning Fiend Hunter from your graveyard to the battlefield.
  4. When Fiend Hunter enters the battlefield, its first ability triggers, exiling Hero of the Dunes.
  5. Repeat.
Results
Infinite colorless mana. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.

Kroxa and Kunoros
0.25% of 2001 decks 5 decks
Bane, Lord of Darkness
0.10% of 2087 decks 2 decks
Teysa, Orzhov Scion
0.07% of 2675 decks 2 decks
Teysa Karlov
0.01% of 15216 decks 2 decks
Jirina Kudro
0.15% of 1302 decks 2 decks
Barrowin of Clan Undurr
0.91% of 220 decks 2 decks
Othelm, Sigardian Outcast // Wernog, Rider's Chaplain
0.22% of 912 decks 2 decks
Silvar, Devourer of the Free // Trynn, Champion of Freedom
0.06% of 3564 decks 2 decks
Orah, Skyclave Hierophant
0.04% of 2828 decks 1 decks
Karador, Ghost Chieftain
0.02% of 5443 decks 1 decks
Athreos, God of Passage
0.02% of 6116 decks 1 decks
Alesha, Who Smiles at Death
0.02% of 5882 decks 1 decks
Bartolomé del Presidio
0.09% of 1148 decks 1 decks
Thalia and The Gitrog Monster
0.01% of 12491 decks 1 decks
Esika, God of the Tree
0.01% of 17767 decks 1 decks
Esior, Wardwing Familiar // Ravos, Soultender
2.13% of 47 decks 1 decks
Kenrith, the Returned King
0.00% of 21513 decks 1 decks
Astarion, the Decadent
0.03% of 3814 decks 1 decks
High Synergy Cards
Eternal Witness
100% of 6 decks +79% synergy
Saffi Eriksdotter
67% of 6 decks +65% synergy
Altar of Dementia
55% of 31 decks +52% synergy
Avacyn's Pilgrim
67% of 6 decks +52% synergy
Phyrexian Altar
52% of 31 decks +48% synergy
Zulaport Cutthroat
55% of 31 decks +45% synergy
Judith, the Scourge Diva
42% of 12 decks +40% synergy
Skullclamp
48% of 31 decks +36% synergy
Viscera Seer
45% of 31 decks +36% synergy
Goblin Bombardment
42% of 12 decks +35% synergy
Top Cards
Swords to Plowshares
71% of 31 decks +8% synergy
Faithless Looting
50% of 12 decks +33% synergy
Path to Exile
48% of 31 decks +3% synergy
Blood Artist
45% of 31 decks +33% synergy
Reanimate
42% of 31 decks +26% synergy
Impact Tremors
42% of 12 decks +32% synergy
Pitiless Plunderer
39% of 31 decks +31% synergy
Animate Dead
39% of 31 decks +29% synergy
Karmic Guide
35% of 31 decks +31% synergy
Damn
35% of 31 decks +19% synergy
Creatures
Riders of Rohan
50% of 6 decks +48% synergy
Imperial Recruiter
33% of 12 decks +27% synergy
Sun Titan
32% of 31 decks +22% synergy
Angel of Glory's Rise
29% of 31 decks +28% synergy
Grim Haruspex
29% of 31 decks +25% synergy
Morbid Opportunist
29% of 31 decks +24% synergy
Cruel Celebrant
29% of 31 decks +21% synergy
Elas il-Kor, Sadistic Pilgrim
29% of 31 decks +17% synergy
Cartel Aristocrat
26% of 31 decks +25% synergy
Esper Sentinel
26% of 31 decks +5% synergy
Hanweir Garrison
25% of 12 decks +24% synergy
Kroxa, Titan of Death's Hunger
25% of 12 decks +24% synergy
Jirina, Dauntless General
25% of 16 decks +23% synergy
Mishra, Claimed by Gix
25% of 12 decks +23% synergy
Professional Face-Breaker
25% of 12 decks +16% synergy
Mayhem Devil
25% of 12 decks +15% synergy
Lotho, Corrupt Shirriff
25% of 16 decks +10% synergy
Sister Hospitaller
23% of 31 decks +22% synergy
Species Specialist
23% of 31 decks +21% synergy
Teysa Karlov
23% of 31 decks +18% synergy
Carrion Feeder
23% of 31 decks +17% synergy
Syr Konrad, the Grim
23% of 31 decks +14% synergy
Priest of Fell Rites
19% of 31 decks +17% synergy
Stitcher's Supplier
19% of 31 decks +17% synergy
Mother of Runes
19% of 31 decks +13% synergy
Coppercoat Vanguard
19% of 16 decks +17% synergy
Extraction Specialist
16% of 31 decks +16% synergy
Prowling Geistcatcher
16% of 31 decks +16% synergy
Xathrid Necromancer
16% of 31 decks +16% synergy
Leonin Relic-Warder
16% of 31 decks +15% synergy
Reveillark
16% of 31 decks +14% synergy
Luminous Broodmoth
16% of 31 decks +14% synergy
Liesa, Forgotten Archangel
16% of 31 decks +12% synergy
Corpse Knight
16% of 31 decks +10% synergy
Knight of the White Orchid
16% of 31 decks +10% synergy
Grand Abolisher
16% of 31 decks +7% synergy
Solemn Simulacrum
16% of 31 decks +2% synergy
Jerren, Corrupted Bishop
13% of 31 decks +13% synergy
Cemetery Protector
13% of 31 decks +12% synergy
General Kudro of Drannith
13% of 31 decks +12% synergy
Abdel Adrian, Gorion's Ward
13% of 31 decks +12% synergy
Charming Prince
13% of 31 decks +11% synergy
Priest of Forgotten Gods
13% of 31 decks +11% synergy
Pawn of Ulamog
13% of 31 decks +11% synergy
Falkenrath Noble
13% of 31 decks +11% synergy
Recruiter of the Guard
13% of 31 decks +10% synergy
Wall of Omens
13% of 31 decks +10% synergy
Skyclave Apparition
13% of 31 decks +10% synergy
Cathar Commando
13% of 31 decks +10% synergy
Midnight Reaper
13% of 31 decks +9% synergy
Instants
Counterspell
60% of 5 decks +17% synergy
Boros Charm
33% of 12 decks +8% synergy
Entomb
29% of 31 decks +22% synergy
Malakir Rebirth
26% of 31 decks +17% synergy
Abrade
25% of 12 decks +14% synergy
Rakdos Charm
25% of 12 decks +11% synergy
Vampiric Tutor
23% of 31 decks +4% synergy
Dark Ritual
23% of 31 decks +0% synergy
Ephemerate
19% of 31 decks +13% synergy
Village Rites
19% of 31 decks +9% synergy
Anguished Unmaking
19% of 31 decks -5% synergy
Generous Gift
19% of 31 decks -6% synergy
Plumb the Forbidden
16% of 31 decks +13% synergy
Sejiri Shelter
16% of 31 decks +13% synergy
Enlightened Tutor
16% of 31 decks -2% synergy
Teferi's Protection
16% of 31 decks -4% synergy
Kabira Takedown
13% of 31 decks +11% synergy
Flawless Maneuver
13% of 31 decks +3% synergy
Deadly Rollick
13% of 31 decks +2% synergy
Rally the Ancestors
10% of 31 decks +9% synergy
Mana Tithe
10% of 31 decks +8% synergy
Call the Coppercoats
10% of 31 decks +6% synergy
Murder
10% of 31 decks +6% synergy
Culling the Weak
10% of 31 decks +6% synergy
Go for the Throat
10% of 31 decks +3% synergy
Infernal Grasp
10% of 31 decks +2% synergy
Deadly Dispute
10% of 31 decks -1% synergy
Sorceries
Demonic Tutor
48% of 31 decks +26% synergy
Gamble
33% of 12 decks +23% synergy
Ruinous Ultimatum
33% of 12 decks +15% synergy
Victimize
32% of 31 decks +21% synergy
Buried Alive
29% of 31 decks +23% synergy
Sevinne's Reclamation
19% of 31 decks +12% synergy
Diabolic Intent
19% of 31 decks +11% synergy
Final Parting
16% of 31 decks +14% synergy
Citywide Bust
13% of 31 decks +12% synergy
Rite of Oblivion
13% of 31 decks +10% synergy
Living Death
13% of 31 decks +8% synergy
Doomskar
10% of 31 decks +8% synergy
Persist
10% of 31 decks +7% synergy
Unearth
10% of 31 decks +6% synergy
Agadeem's Awakening
10% of 31 decks +6% synergy
Dread Return
10% of 31 decks +4% synergy
Imperial Seal
10% of 31 decks +4% synergy
Wrath of God
10% of 31 decks +3% synergy
Read the Bones
10% of 31 decks +2% synergy
Austere Command
10% of 31 decks -3% synergy
Toxic Deluge
10% of 31 decks -8% synergy
Utility Artifacts
Blasting Station
26% of 31 decks +25% synergy
Collector's Vault
23% of 13 decks +22% synergy
Wishclaw Talisman
23% of 31 decks +17% synergy
Swiftfoot Boots
19% of 31 decks -8% synergy
Pyre of Heroes
13% of 31 decks +12% synergy
Nim Deathmantle
13% of 31 decks +12% synergy
Mesmeric Orb
13% of 31 decks +11% synergy
Oketra's Monument
13% of 31 decks +11% synergy
Panharmonicon
13% of 31 decks +9% synergy
Wayfarer's Bauble
13% of 31 decks +3% synergy
Mindcrank
10% of 31 decks +8% synergy
Lightning Greaves
10% of 31 decks -16% synergy
Enchantments
Bastion of Remembrance
29% of 31 decks +23% synergy
Smothering Tithe
26% of 31 decks +1% synergy
Gift of Immortality
16% of 31 decks +14% synergy
The Meathook Massacre
13% of 31 decks +8% synergy
Fanatical Devotion
10% of 31 decks +9% synergy
Dance of the Dead
10% of 31 decks +8% synergy
Bloodchief Ascension
10% of 31 decks +6% synergy
Dictate of Erebos
10% of 31 decks +6% synergy
Teleportation Circle
10% of 31 decks +6% synergy
Grave Pact
10% of 31 decks +5% synergy
Necropotence
10% of 31 decks +4% synergy
Sanguine Bond
10% of 31 decks +4% synergy
Blind Obedience
10% of 31 decks +3% synergy
Black Market Connections
10% of 31 decks -1% synergy
Planeswalkers
Liliana, Dreadhorde General
10% of 31 decks +6% synergy
Utility Lands
Bojuka Bog
26% of 31 decks -5% synergy
High Market
23% of 31 decks +19% synergy
Restless Fortress
20% of 15 decks +17% synergy
Urborg, Tomb of Yawgmoth
16% of 31 decks +6% synergy
Phyrexian Tower
13% of 31 decks +4% synergy
Westvale Abbey
10% of 31 decks +7% synergy
Geier Reach Sanitarium
10% of 31 decks +6% synergy
Castle Ardenvale
10% of 31 decks +5% synergy
Eiganjo, Seat of the Empire
10% of 31 decks +1% synergy
Ancient Tomb
10% of 31 decks -1% synergy
Reliquary Tower
10% of 31 decks -20% synergy
Mana Artifacts
Arcane Signet
87% of 31 decks +15% synergy
Sol Ring
84% of 31 decks -1% synergy
Azorius Signet
60% of 5 decks +34% synergy
Dimir Signet
60% of 5 decks +30% synergy
Rakdos Signet
33% of 12 decks +4% synergy
Orzhov Signet
32% of 31 decks +5% synergy
Talisman of Hierarchy
29% of 31 decks +5% synergy
Talisman of Conviction
25% of 12 decks +2% synergy
Boros Signet
25% of 12 decks +1% synergy
Talisman of Indulgence
25% of 12 decks -1% synergy
Fellwar Stone
23% of 31 decks +2% synergy
Basalt Monolith
10% of 31 decks +7% synergy
Mana Crypt
10% of 31 decks +1% synergy
Mind Stone
10% of 31 decks -8% synergy
Lands
Command Tower
87% of 31 decks +13% synergy
Temple Garden
83% of 6 decks +43% synergy
Sunpetal Grove
67% of 6 decks +43% synergy
Indatha Triome
67% of 6 decks +35% synergy
Overgrown Tomb
67% of 6 decks +24% synergy
Blood Crypt
58% of 12 decks +20% synergy
Brushland
50% of 6 decks +34% synergy
Bountiful Promenade
50% of 6 decks +26% synergy
Spectator Seating
50% of 12 decks +25% synergy
Luxury Suite
50% of 12 decks +24% synergy
Woodland Cemetery
50% of 6 decks +22% synergy
Sacred Foundry
50% of 12 decks +14% synergy
Vault of Champions
48% of 31 decks +23% synergy
Godless Shrine
48% of 31 decks +8% synergy
Isolated Chapel
45% of 31 decks +18% synergy
Path of Ancestry
42% of 31 decks +21% synergy
Sulfurous Springs
42% of 12 decks +22% synergy
Battlefield Forge
42% of 12 decks +16% synergy
Savai Triome
42% of 12 decks +14% synergy
Clifftop Retreat
42% of 12 decks +14% synergy
Caves of Koilos
39% of 31 decks +11% synergy
Exotic Orchard
35% of 31 decks -0% synergy
Badlands
33% of 12 decks +20% synergy
Dragonskull Summit
33% of 12 decks +3% synergy
Marsh Flats
32% of 31 decks +21% synergy
Fetid Heath
26% of 31 decks +15% synergy
Needleverge Pathway
25% of 12 decks +16% synergy
Plateau
25% of 12 decks +12% synergy
Sundown Pass
25% of 12 decks +10% synergy
Haunted Ridge
25% of 12 decks +9% synergy
Secluded Courtyard
23% of 31 decks +18% synergy
Ash Barrens
23% of 31 decks +18% synergy
Bloodstained Mire
23% of 31 decks +12% synergy
Arid Mesa
23% of 31 decks +12% synergy
Shineshadow Snarl
23% of 31 decks +10% synergy
Temple of Silence
23% of 31 decks +5% synergy
Verdant Catacombs
19% of 31 decks +8% synergy
Tainted Field
19% of 31 decks +6% synergy
Orzhov Basilica
19% of 31 decks +3% synergy
Concealed Courtyard
16% of 31 decks +11% synergy
Mana Confluence
16% of 31 decks +9% synergy
City of Brass
16% of 31 decks +8% synergy
Fabled Passage
16% of 31 decks +7% synergy
Brightclimb Pathway
16% of 31 decks +6% synergy
Scrubland
16% of 31 decks +2% synergy
Evolving Wilds
16% of 31 decks -5% synergy
Windswept Heath
13% of 31 decks +2% synergy
Shattered Sanctum
13% of 31 decks -1% synergy
Forbidden Orchard
10% of 31 decks +7% synergy
Sunlit Marsh
10% of 31 decks +5% synergy