Stangg, Echo Warrior + Éomer, Marshal of Rohan + Rionya, Fire Dancer

Stangg, Echo Warrior
Éomer, Marshal of Rohan
Rionya, Fire Dancer

Requires
Stangg, Echo Warrior must be on the battlefield. Éomer, Marshal of Rohan must be on the battlefield. Rionya, Fire Dancer must be on the battlefield. Stangg does not have summoning sickness. An opponent cannot block and kill Stangg. You control another legendary creature that can attack this turn. You have a way to kill the additional legendary creature at instant speed.
Steps
  1. At the beginning of your combat phase, Rionya triggers, creating at least one token copy of Éomer with haste.
  2. Put all but the newest Éomer into your graveyard due to the legend rule.
  3. Declare Stangg and the additional legendary creature as attackers.
  4. Stangg triggers, creating a 3/4 Stangg Twin creature token that is tapped and attacking.
  5. Holding priority, kill the additional legendary creature.
  6. When the creature dies, the Éomer token triggers, causing you to untap all creatures you control and to get at least one additional combat phase after this one.
  7. Move to your next combat phase.
  8. At the beginning of your combat phase, Rionya triggers, creating at least one token copy of Éomer with haste.
  9. Put all but the newest Éomer into your graveyard due to the legend rule.
  10. Declare Stangg as an attacker.
  11. Stangg triggers, creating a 3/4 Stangg Twin creature token that is tapped and attacking.
  12. Put either Stangg Twin token into your graveyard due to the legend rule.
  13. Repeat from step 6.
Results
Infinite combat phases. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite mana creatures you control can produce. Infinite untap of creatures you control.

Stangg
1.61% of 62 decks 1 decks
Stangg, Echo Warrior
0.04% of 2498 decks 1 decks
Creatures
Mirrorwing Dragon
50% of 2 decks +50% synergy
Hoarding Dragon
50% of 2 decks +50% synergy
Gallia of the Endless Dance
50% of 2 decks +50% synergy
Knickknack Ouphe
50% of 2 decks +49% synergy
Zada, Hedron Grinder
50% of 2 decks +49% synergy
Neheb, the Eternal
50% of 2 decks +49% synergy
Ulasht, the Hate Seed
50% of 2 decks +48% synergy
Composer of Spring
50% of 2 decks +48% synergy
Goblin Engineer
50% of 2 decks +48% synergy
Tanglespan Lookout
50% of 2 decks +48% synergy
Port Razer
50% of 2 decks +48% synergy
Chishiro, the Shattered Blade
50% of 2 decks +47% synergy
Thunderfoot Baloth
50% of 2 decks +46% synergy
Setessan Champion
50% of 2 decks +46% synergy
Jaxis, the Troublemaker
50% of 2 decks +46% synergy
Sanctum Weaver
50% of 2 decks +45% synergy
Eidolon of Blossoms
50% of 2 decks +45% synergy
Oracle of Mul Daya
50% of 2 decks +45% synergy
Delina, Wild Mage
50% of 2 decks +44% synergy
Akki Battle Squad
50% of 2 decks +44% synergy
Karlach, Fury of Avernus
50% of 2 decks +43% synergy
Azusa, Lost but Seeking
50% of 2 decks +43% synergy
Garruk's Packleader
50% of 2 decks +43% synergy
Moraug, Fury of Akoum
50% of 2 decks +42% synergy
Arbor Elf
50% of 2 decks +42% synergy
Kodama of the West Tree
50% of 2 decks +41% synergy
Goblin Anarchomancer
50% of 2 decks -2% synergy
Instants
Archdruid's Charm
100% of 2 decks +90% synergy
Unholy Heat
50% of 2 decks +50% synergy
Play with Fire
50% of 2 decks +50% synergy
Demon Bolt
50% of 2 decks +48% synergy
Royal Treatment
50% of 2 decks +46% synergy
Second Harvest
50% of 2 decks +45% synergy
Legolas's Quick Reflexes
50% of 2 decks +45% synergy
Lightning Bolt
50% of 2 decks +42% synergy
Harrow
50% of 2 decks +39% synergy
Entish Restoration
50% of 2 decks +38% synergy
Worldly Tutor
50% of 2 decks +37% synergy
Tyvar's Stand
50% of 2 decks +35% synergy
Tamiyo's Safekeeping
50% of 2 decks +33% synergy
Beast Within
50% of 2 decks -8% synergy
Sorceries
Explore
100% of 2 decks +87% synergy
Rampant Growth
100% of 2 decks +55% synergy
Cultivate
100% of 2 decks +46% synergy
Lava Spike
50% of 2 decks +50% synergy
Rift Bolt
50% of 2 decks +50% synergy
Strangle
50% of 2 decks +50% synergy
Warrior's Oath
50% of 2 decks +50% synergy
Parallel Evolution
50% of 2 decks +50% synergy
New Frontiers
50% of 2 decks +50% synergy
Chain Lightning
50% of 2 decks +50% synergy
Kindred Charge
50% of 2 decks +49% synergy
Reckless Handling
50% of 2 decks +49% synergy
Nissa's Pilgrimage
50% of 2 decks +47% synergy
Eldritch Evolution
50% of 2 decks +47% synergy
Twinflame
50% of 2 decks +46% synergy
Traverse the Outlands
50% of 2 decks +45% synergy
Search for Tomorrow
50% of 2 decks +45% synergy
Gamble
50% of 2 decks +42% synergy
Finale of Devastation
50% of 2 decks +42% synergy
Jeska's Will
50% of 2 decks +31% synergy
Farseek
50% of 2 decks +21% synergy
Three Visits
50% of 2 decks +21% synergy
Nature's Lore
50% of 2 decks +10% synergy
Utility Artifacts
Heroes' Podium
50% of 2 decks +50% synergy
Nim Deathmantle
50% of 2 decks +50% synergy
Minion Reflector
50% of 2 decks +50% synergy
Mirror Gallery
50% of 2 decks +50% synergy
Mirage Mirror
50% of 2 decks +50% synergy
Phyrexian Altar
50% of 2 decks +49% synergy
Helm of the Gods
50% of 2 decks +49% synergy
Rings of Brighthearth
50% of 2 decks +49% synergy
Lithoform Engine
50% of 2 decks +49% synergy
Mirror Box
50% of 2 decks +48% synergy
Beamtown Beatstick
50% of 2 decks +48% synergy
Ashnod's Altar
50% of 2 decks +47% synergy
Esika's Chariot
50% of 2 decks +47% synergy
Helm of the Host
50% of 2 decks +45% synergy
Blackblade Reforged
50% of 2 decks +42% synergy
Enchantments
Grim Reaper's Sprint
100% of 1 decks +98% synergy
Strong Back
100% of 1 decks +97% synergy
Pandemonium
50% of 2 decks +50% synergy
Braid of Fire
50% of 2 decks +50% synergy
Dual Nature
50% of 2 decks +50% synergy
Most Wanted
50% of 2 decks +49% synergy
Pattern of Rebirth
50% of 2 decks +49% synergy
Cartouche of Strength
50% of 2 decks +49% synergy
Setessan Training
50% of 2 decks +49% synergy
Rune of Speed
50% of 2 decks +49% synergy
Fruit of the First Tree
50% of 2 decks +49% synergy
Bequeathal
50% of 2 decks +48% synergy
Splinter Twin
50% of 2 decks +48% synergy
Concordant Crossroads
50% of 2 decks +48% synergy
Dragon Mantle
50% of 2 decks +48% synergy
Rune of Might
50% of 2 decks +48% synergy
Etali's Favor
50% of 2 decks +48% synergy
Canopy Cover
50% of 2 decks +48% synergy
Ancestral Mask
50% of 2 decks +47% synergy
Flameshadow Conjuring
50% of 2 decks +47% synergy
Audacity
50% of 2 decks +47% synergy
Alpha Authority
50% of 2 decks +47% synergy
One with the Kami
50% of 2 decks +46% synergy
Enchantress's Presence
50% of 2 decks +46% synergy
Primal Vigor
50% of 2 decks +46% synergy
Sticky Fingers
50% of 2 decks +45% synergy
Impact Tremors
50% of 2 decks +45% synergy
Parallel Lives
50% of 2 decks +43% synergy
Exploration
50% of 2 decks +43% synergy
Doubling Season
50% of 2 decks +42% synergy
Aggravated Assault
50% of 2 decks +41% synergy
Rancor
50% of 2 decks +40% synergy
Snake Umbra
50% of 2 decks +40% synergy
Bear Umbra
50% of 2 decks +39% synergy
Elemental Bond
50% of 2 decks +39% synergy
Warstorm Surge
50% of 2 decks +36% synergy
Wild Growth
50% of 2 decks +34% synergy
Battles
Invasion of Zendikar
50% of 2 decks +46% synergy
Invasion of Ikoria
50% of 2 decks +43% synergy
Utility Lands
Kessig Wolf Run
100% of 2 decks +59% synergy
Skarrg, the Rage Pits
50% of 2 decks +37% synergy
Reliquary Tower
50% of 2 decks +25% synergy
Rogue's Passage
50% of 2 decks +23% synergy
Mana Artifacts
Sol Ring
100% of 2 decks +20% synergy
Basalt Monolith
50% of 2 decks +49% synergy
Commander's Sphere
50% of 2 decks +41% synergy
Gruul Signet
50% of 2 decks +23% synergy
Arcane Signet
50% of 2 decks -12% synergy
Lands
Karplusan Forest
100% of 2 decks +64% synergy
Spire Garden
100% of 2 decks +62% synergy
Stomping Ground
100% of 2 decks +55% synergy
Rockfall Vale
100% of 2 decks +54% synergy
Rootbound Crag
100% of 2 decks +51% synergy
Cinder Glade
100% of 2 decks +30% synergy
Mogg Hollows
50% of 2 decks +50% synergy
Pinecrest Ridge
50% of 2 decks +50% synergy
Highland Weald
50% of 2 decks +49% synergy
Shivan Oasis
50% of 2 decks +48% synergy
Timber Gorge
50% of 2 decks +47% synergy
Kazandu Refuge
50% of 2 decks +45% synergy
Grove of the Burnwillows
50% of 2 decks +41% synergy
Taiga
50% of 2 decks +38% synergy
Rugged Highlands
50% of 2 decks +37% synergy
Copperline Gorge
50% of 2 decks +35% synergy
Fire-Lit Thicket
50% of 2 decks +35% synergy
Cragcrown Pathway
50% of 2 decks +26% synergy
Wooded Foothills
50% of 2 decks +23% synergy
Temple of Abandon
50% of 2 decks +16% synergy
Game Trail
50% of 2 decks +3% synergy
Command Tower
50% of 2 decks -34% synergy