Éomer, Marshal of Rohan + Kari Zev, Skyship Raider + Helm of the Host + Ashnod's Altar

Éomer, Marshal of Rohan
Kari Zev, Skyship Raider
Helm of the Host
Ashnod's 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. Ashnod's 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 Ashnod's Altar by sacrificing Ragavan, adding cc.
  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 (2)
Éomer, Marshal of Rohan
24.00% of 75 decks 18 decks
The Master, Multiplied
0.15% of 2684 decks 4 decks
High Synergy Cards (10)
Rising of the Day
85% of 26 decks +81% synergy
Delina, Wild Mage
77% of 26 decks +76% synergy
Laelia, the Blade Reforged
73% of 26 decks +72% synergy
Captain Lannery Storm
73% of 26 decks +72% synergy
Moraug, Fury of Akoum
73% of 26 decks +71% synergy
Goblin Bombardment
73% of 26 decks +70% synergy
Tuktuk the Explorer
69% of 26 decks +69% synergy
Karlach, Fury of Avernus
69% of 26 decks +67% synergy
Feldon of the Third Path
69% of 26 decks +67% synergy
Anger
69% of 26 decks +66% synergy
Top Cards (10)
Blade of Selves
81% of 26 decks +79% synergy
Blasphemous Act
77% of 26 decks +61% synergy
Chaos Warp
73% of 26 decks +57% synergy
Swiftfoot Boots
73% of 26 decks +45% synergy
Etali, Primal Storm
69% of 26 decks +64% synergy
Gimli of the Glittering Caves
65% of 26 decks +65% synergy
Heroes' Podium
65% of 26 decks +65% synergy
Glóin, Dwarf Emissary
65% of 26 decks +64% synergy
Urabrask the Hidden
65% of 26 decks +64% synergy
Krenko, Tin Street Kingpin
65% of 26 decks +63% synergy
Creatures (48)
Dalek Squadron
100% of 3 decks +99% synergy
Gut, True Soul Zealot
62% of 26 decks +61% synergy
Squee, the Immortal
62% of 26 decks +61% synergy
Atsushi, the Blazing Sky
62% of 26 decks +60% synergy
Godo, Bandit Warlord
58% of 26 decks +57% synergy
Goro-Goro, Disciple of Ryusei
58% of 26 decks +57% synergy
Ilharg, the Raze-Boar
54% of 26 decks +53% synergy
Grenzo, Havoc Raiser
50% of 26 decks +49% synergy
Torbran, Thane of Red Fell
50% of 26 decks +48% synergy
Feldon, Ronom Excavator
46% of 26 decks +46% synergy
Arni Metalbrow
42% of 26 decks +42% synergy
Anax, Hardened in the Forge
42% of 26 decks +42% synergy
Squee, Goblin Nabob
42% of 26 decks +42% synergy
Kazuul, Tyrant of the Cliffs
42% of 26 decks +41% synergy
Jaxis, the Troublemaker
42% of 26 decks +41% synergy
Ragavan, Nimble Pilferer
42% of 26 decks +39% synergy
Squee, Dubious Monarch
38% of 26 decks +38% synergy
Orthion, Hero of Lavabrink
38% of 26 decks +37% synergy
Kiki-Jiki, Mirror Breaker
38% of 26 decks +37% synergy
Professional Face-Breaker
38% of 26 decks +34% synergy
Krenko, Mob Boss
31% of 26 decks +30% synergy
Magda, Brazen Outlaw
31% of 26 decks +29% synergy
Drakuseth, Maw of Flames
31% of 26 decks +29% synergy
Holga, Relentless Rager
27% of 26 decks +27% synergy
Zealous Conscripts
27% of 26 decks +26% synergy
Combat Celebrant
27% of 26 decks +26% synergy
Dockside Extortionist
27% of 26 decks +19% synergy
Purphoros, Bronze-Blooded
23% of 26 decks +23% synergy
Neheb, Dreadhorde Champion
23% of 26 decks +22% synergy
Dark-Dweller Oracle
19% of 26 decks +19% synergy
Urabrask, Heretic Praetor
19% of 26 decks +18% synergy
Imperial Recruiter
19% of 26 decks +16% synergy
Éomer of the Riddermark
15% of 26 decks +15% synergy
Rionya, Fire Dancer
15% of 26 decks +15% synergy
Rograkh, Son of Rohgahh
15% of 26 decks +15% synergy
Hope of Ghirapur
15% of 26 decks +15% synergy
Neheb, the Eternal
15% of 26 decks +14% synergy
Solemn Simulacrum
15% of 26 decks +1% synergy
Amber Gristle O'Maul
12% of 26 decks +11% synergy
Márton Stromgald
12% of 26 decks +11% synergy
Genasi Enforcers
12% of 26 decks +11% synergy
Alena, Kessig Trapper
12% of 26 decks +11% synergy
The Red Terror
12% of 26 decks +11% synergy
Firbolg Flutist
12% of 26 decks +11% synergy
Flamerush Rider
12% of 26 decks +11% synergy
Hellkite Courser
12% of 26 decks +11% synergy
Port Razer
12% of 26 decks +11% synergy
Dualcaster Mage
12% of 26 decks +9% synergy
Instants (15)
Dark Ritual
75% of 4 decks +64% synergy
Wild Magic Surge
50% of 26 decks +48% synergy
Bolt Bend
42% of 26 decks +41% synergy
Thrill of Possibility
42% of 26 decks +37% synergy
Big Score
38% of 26 decks +34% synergy
Abrade
38% of 26 decks +33% synergy
Fling
31% of 26 decks +30% synergy
Kazuul's Fury
31% of 26 decks +29% synergy
Tibalt's Trickery
27% of 26 decks +24% synergy
Lightning Bolt
27% of 26 decks +22% synergy
Deflecting Swat
27% of 26 decks +19% synergy
Seething Song
15% of 26 decks +12% synergy
Valakut Awakening
15% of 26 decks +12% synergy
Battle Hymn
12% of 26 decks +10% synergy
Red Elemental Blast
12% of 26 decks +8% synergy
Sorceries (12)
Jeska's Will
62% of 26 decks +53% synergy
Faithless Looting
58% of 26 decks +49% synergy
Relentless Assault
46% of 26 decks +45% synergy
Vandalblast
42% of 26 decks +34% synergy
Tormenting Voice
35% of 26 decks +33% synergy
Mana Geyser
35% of 26 decks +31% synergy
Seize the Day
31% of 26 decks +30% synergy
Reforge the Soul
23% of 26 decks +22% synergy
Cathartic Reunion
23% of 26 decks +21% synergy
Twinflame
19% of 26 decks +18% synergy
Hate Mirage
15% of 26 decks +15% synergy
Chain Reaction
15% of 26 decks +13% synergy
Utility Artifacts (19)
Lightning Greaves
58% of 26 decks +32% synergy
Hazoret's Monument
54% of 26 decks +53% synergy
Altar of Dementia
42% of 26 decks +39% synergy
Phyrexian Altar
42% of 26 decks +38% synergy
Embercleave
38% of 26 decks +37% synergy
Blackblade Reforged
38% of 26 decks +34% synergy
Hexplate Wallbreaker
35% of 26 decks +34% synergy
Urabrask's Forge
31% of 26 decks +30% synergy
Mimic Vat
27% of 26 decks +26% synergy
Tome of Legends
23% of 26 decks +22% synergy
Skullclamp
23% of 26 decks +10% synergy
Commander's Plate
19% of 26 decks +17% synergy
Sword of Hearth and Home
15% of 26 decks +13% synergy
The One Ring
15% of 26 decks +7% synergy
Spawning Pit
12% of 26 decks +11% synergy
Blasting Station
12% of 26 decks +11% synergy
Dolmen Gate
12% of 26 decks +11% synergy
Endless Atlas
12% of 26 decks +10% synergy
Wayfarer's Bauble
12% of 26 decks +0% synergy
Enchantments (16)
There and Back Again
38% of 26 decks +37% synergy
Barrage of Expendables
35% of 26 decks +35% synergy
Breath of Fury
23% of 26 decks +23% synergy
Fable of the Mirror-Breaker
23% of 26 decks +22% synergy
Aggravated Assault
23% of 26 decks +22% synergy
Berserkers' Onslaught
19% of 26 decks +19% synergy
Street Urchin
15% of 26 decks +15% synergy
Splinter Twin
15% of 26 decks +15% synergy
Flameshadow Conjuring
15% of 26 decks +15% synergy
Impact Tremors
15% of 26 decks +11% synergy
Brazen Cannonade
12% of 26 decks +11% synergy
Determined Iteration
12% of 26 decks +11% synergy
Mirror March
12% of 26 decks +11% synergy
Roar of Resistance
12% of 26 decks +11% synergy
Fervor
12% of 26 decks +11% synergy
Blood Moon
12% of 26 decks +10% synergy
Planeswalkers (1)
Koth, Fire of Resistance
12% of 26 decks +11% synergy
Utility Lands (15)
Bojuka Bog
75% of 4 decks +59% synergy
Shinka, the Bloodsoaked Keep
54% of 26 decks +53% synergy
Castle Embereth
54% of 26 decks +52% synergy
Mines of Moria
54% of 26 decks +51% synergy
War Room
42% of 26 decks +36% synergy
Valakut, the Molten Pinnacle
38% of 26 decks +37% synergy
Sokenzan, Crucible of Defiance
27% of 26 decks +24% synergy
High Market
27% of 26 decks +23% synergy
Geier Reach Sanitarium
27% of 26 decks +23% synergy
Rogue's Passage
27% of 26 decks +8% synergy
Mikokoro, Center of the Sea
23% of 26 decks +21% synergy
Mountain Stronghold
15% of 26 decks +15% synergy
Maze of Ith
15% of 26 decks +13% synergy
Reliquary Tower
15% of 26 decks -13% synergy
Inventors' Fair
12% of 26 decks +7% synergy
Mana Artifacts (13)
Rakdos Signet
100% of 4 decks +93% synergy
Sol Ring
88% of 26 decks +4% synergy
Arcane Signet
65% of 26 decks -5% synergy
Relic of Legends
54% of 26 decks +51% synergy
Mind Stone
38% of 26 decks +20% synergy
Cursed Mirror
23% of 26 decks +21% synergy
Fire Diamond
23% of 26 decks +20% synergy
Fellwar Stone
23% of 26 decks +2% synergy
Heraldic Banner
19% of 26 decks +17% synergy
Extraplanar Lens
15% of 26 decks +14% synergy
Honor-Worn Shaku
12% of 26 decks +11% synergy
Gilded Lotus
12% of 26 decks +8% synergy
Thought Vessel
12% of 26 decks -4% synergy
Lands (13)
Dragonskull Summit
100% of 4 decks +93% synergy
Smoldering Marsh
100% of 4 decks +93% synergy
Blightstep Pathway
75% of 4 decks +73% synergy
Foreboding Ruins
75% of 4 decks +71% synergy
Rakdos Carnarium
75% of 4 decks +71% synergy
Haunted Ridge
75% of 4 decks +71% synergy
Sulfurous Springs
75% of 4 decks +71% synergy
Myriad Landscape
54% of 26 decks +33% synergy
Plaza of Heroes
31% of 26 decks +27% synergy
Command Tower
19% of 26 decks -54% synergy
Exotic Orchard
15% of 26 decks -19% synergy
Terramorphic Expanse
12% of 26 decks -4% synergy
Evolving Wilds
12% of 26 decks -10% synergy