Éomer, Marshal of Rohan + Kari Zev, Skyship Raider + Helm of the Host + Phyrexian Altar

Éomer, Marshal of Rohan
Kari Zev, Skyship Raider
Helm of the Host
Phyrexian Altar

Requires
Éomer, Marshal of Rohan must be on the battlefield. Kari Zev, Skyship Raider must be on the battlefield. Helm of the Host must be on the battlefield. Phyrexian Altar must be on the battlefield. Helm of the Host attached to Éomer. Kari Zev does not have summoning sickness and cannot be blocked and killed by an opponent.
Steps
  1. At the beginning of your combat phase, Helm of the Host triggers, creating a nonlegendary token copy of Éomer with haste.
  2. Declare Kari Zev as an attacker.
  3. Kari Zev triggers, creating a legendary 2/1 Ragavan creature token that is tapped and attacking.
  4. Holding priority, activate Phyrexian Altar by sacrificing Ragavan, adding 1.
  5. When Ragavan dies, each Éomer that hasn't triggered this turn triggers, untapping all creatures you control and causing you to get at least one additional combat phase after this one.
  6. Repeat each combat phase.
Results
Infinite combat phases. Infinite creature tokens with haste. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.

Top Commanders (3)
Éomer, Marshal of Rohan
13.33% of 75 decks 10 decks
The Master, Multiplied
0.04% of 2684 decks 1 decks
Ragavan, Nimble Pilferer
0.03% of 2883 decks 1 decks
High Synergy Cards (10)
Laelia, the Blade Reforged
83% of 12 decks +82% synergy
Captain Lannery Storm
83% of 12 decks +82% synergy
Atsushi, the Blazing Sky
83% of 12 decks +82% synergy
Goblin Bombardment
83% of 12 decks +80% synergy
Rising of the Day
83% of 12 decks +80% synergy
Etali, Primal Storm
83% of 12 decks +78% synergy
Tuktuk the Explorer
75% of 12 decks +75% synergy
Delina, Wild Mage
75% of 12 decks +74% synergy
Moraug, Fury of Akoum
75% of 12 decks +73% synergy
Karlach, Fury of Avernus
75% of 12 decks +73% synergy
Top Cards (10)
Ashnod's Altar
92% of 12 decks +84% synergy
Blade of Selves
83% of 12 decks +82% synergy
Feldon of the Third Path
75% of 12 decks +73% synergy
Blasphemous Act
75% of 12 decks +59% synergy
Swiftfoot Boots
75% of 12 decks +47% synergy
Heroes' Podium
75% of 12 decks +74% synergy
Gimli of the Glittering Caves
67% of 12 decks +66% synergy
Godo, Bandit Warlord
67% of 12 decks +66% synergy
Ilharg, the Raze-Boar
67% of 12 decks +66% synergy
Glóin, Dwarf Emissary
67% of 12 decks +66% synergy
Creatures (34)
Goro-Goro, Disciple of Ryusei
67% of 12 decks +66% synergy
Krenko, Tin Street Kingpin
67% of 12 decks +64% synergy
Anger
67% of 12 decks +64% synergy
Gut, True Soul Zealot
58% of 12 decks +58% synergy
Squee, the Immortal
58% of 12 decks +57% synergy
Urabrask the Hidden
58% of 12 decks +57% synergy
Kiki-Jiki, Mirror Breaker
58% of 12 decks +56% synergy
Feldon, Ronom Excavator
50% of 12 decks +50% synergy
Squee, Goblin Nabob
50% of 12 decks +50% synergy
Grenzo, Havoc Raiser
50% of 12 decks +49% synergy
Orthion, Hero of Lavabrink
50% of 12 decks +49% synergy
Ragavan, Nimble Pilferer
50% of 12 decks +46% synergy
Arni Metalbrow
42% of 12 decks +41% synergy
Krenko, Mob Boss
42% of 12 decks +41% synergy
Jaxis, the Troublemaker
42% of 12 decks +40% synergy
Torbran, Thane of Red Fell
42% of 12 decks +40% synergy
Holga, Relentless Rager
33% of 12 decks +33% synergy
Anax, Hardened in the Forge
33% of 12 decks +33% synergy
Purphoros, Bronze-Blooded
33% of 12 decks +33% synergy
Urabrask, Heretic Praetor
33% of 12 decks +33% synergy
Hope of Ghirapur
33% of 12 decks +33% synergy
Kazuul, Tyrant of the Cliffs
33% of 12 decks +32% synergy
Combat Celebrant
33% of 12 decks +32% synergy
Magda, Brazen Outlaw
33% of 12 decks +32% synergy
Drakuseth, Maw of Flames
33% of 12 decks +32% synergy
Professional Face-Breaker
33% of 12 decks +29% synergy
Márton Stromgald
25% of 12 decks +25% synergy
Dark-Dweller Oracle
25% of 12 decks +25% synergy
Squee, Dubious Monarch
25% of 12 decks +24% synergy
Rograkh, Son of Rohgahh
25% of 12 decks +24% synergy
Port Razer
25% of 12 decks +24% synergy
Zealous Conscripts
25% of 12 decks +24% synergy
Imperial Recruiter
25% of 12 decks +22% synergy
Dockside Extortionist
25% of 12 decks +17% synergy
Instants (14)
Chaos Warp
58% of 12 decks +42% synergy
Wild Magic Surge
50% of 12 decks +48% synergy
Fling
42% of 12 decks +41% synergy
Big Score
42% of 12 decks +37% synergy
Bolt Bend
33% of 12 decks +32% synergy
Tibalt's Trickery
33% of 12 decks +30% synergy
Valakut Awakening
33% of 12 decks +30% synergy
Thrill of Possibility
33% of 12 decks +28% synergy
Deflecting Swat
33% of 12 decks +26% synergy
Kazuul's Fury
25% of 12 decks +24% synergy
Seething Song
25% of 12 decks +22% synergy
Red Elemental Blast
25% of 12 decks +22% synergy
Lightning Bolt
25% of 12 decks +20% synergy
Abrade
25% of 12 decks +20% synergy
Sorceries (10)
Jeska's Will
67% of 12 decks +58% synergy
Vandalblast
50% of 12 decks +42% synergy
Faithless Looting
50% of 12 decks +42% synergy
Seize the Day
42% of 12 decks +40% synergy
Relentless Assault
42% of 12 decks +40% synergy
Chain Reaction
33% of 12 decks +31% synergy
Mana Geyser
33% of 12 decks +30% synergy
Reforge the Soul
25% of 12 decks +24% synergy
Twinflame
25% of 12 decks +23% synergy
Cathartic Reunion
25% of 12 decks +23% synergy
Utility Artifacts (12)
Hazoret's Monument
67% of 12 decks +66% synergy
Lightning Greaves
67% of 12 decks +41% synergy
Altar of Dementia
58% of 12 decks +55% synergy
Tome of Legends
50% of 12 decks +49% synergy
Mimic Vat
50% of 12 decks +49% synergy
Embercleave
50% of 12 decks +49% synergy
Hexplate Wallbreaker
42% of 12 decks +41% synergy
Urabrask's Forge
42% of 12 decks +41% synergy
Commander's Plate
42% of 12 decks +39% synergy
Blackblade Reforged
42% of 12 decks +37% synergy
Skullclamp
33% of 12 decks +21% synergy
The One Ring
25% of 12 decks +16% synergy
Enchantments (4)
Barrage of Expendables
33% of 12 decks +33% synergy
There and Back Again
33% of 12 decks +32% synergy
Breath of Fury
25% of 12 decks +25% synergy
Blood Moon
25% of 12 decks +23% synergy
Utility Lands (11)
Shinka, the Bloodsoaked Keep
75% of 12 decks +74% synergy
Castle Embereth
58% of 12 decks +56% synergy
Valakut, the Molten Pinnacle
50% of 12 decks +49% synergy
Mikokoro, Center of the Sea
50% of 12 decks +48% synergy
Mines of Moria
50% of 12 decks +47% synergy
War Room
50% of 12 decks +43% synergy
Geier Reach Sanitarium
42% of 12 decks +38% synergy
Mountain Stronghold
33% of 12 decks +33% synergy
Sokenzan, Crucible of Defiance
33% of 12 decks +31% synergy
High Market
25% of 12 decks +21% synergy
Rogue's Passage
25% of 12 decks +6% synergy
Mana Artifacts (7)
Sol Ring
100% of 12 decks +16% synergy
Relic of Legends
67% of 12 decks +64% synergy
Extraplanar Lens
33% of 12 decks +32% synergy
Arcane Signet
33% of 12 decks -37% synergy
Heraldic Banner
25% of 12 decks +23% synergy
Gilded Lotus
25% of 12 decks +21% synergy
Mind Stone
25% of 12 decks +7% synergy
Lands (2)
Plaza of Heroes
42% of 12 decks +38% synergy
Myriad Landscape
25% of 12 decks +4% synergy