Charnelhoard Wurm + Klauth, Unrivaled Ancient + Relentless Assault

Charnelhoard Wurm
Klauth, Unrivaled Ancient
Relentless Assault

Requires
Charnelhoard Wurm must be on the battlefield. Klauth, Unrivaled Ancient must be on the battlefield. Relentless Assault must be in the graveyard. Charnelhoard Wurm does not have summoning sickness. Klauth and Charnelhoard Wurm cannot be blocked by an opponent.
Steps
  1. Declare Charnelhoard Wurm and Klauth as attackers.
  2. Klauth triggers, adding at least 8 that can only be spent to cast spells.
  3. Deal combat damage to an opponent using Charnelhoard Wurm.
  4. Charnelhoard Wurm triggers, returning Relentless Assault from your graveyard to your hand.
  5. Cast Relentless Assault by paying 2, causing you to untap all creatures that attacked this turn and to get an additional combat and main phase after this one.
  6. Repeat.
Results
Infinite colored mana that can only be spent to cast spells. Infinite combat damage. Infinite combat phases. Infinite magecraft triggers. Infinite storm count.

Slimefoot and Squee
0.01% of 7280 decks 1 decks
Henzie "Toolbox" Torre
0.01% of 14128 decks 1 decks
Creatures
The Gitrog, Ravenous Ride
100% of 1 decks +94% synergy
Infested Thrinax
100% of 1 decks +92% synergy
Wight of the Reliquary
100% of 1 decks +92% synergy
Yargle and Multani
100% of 1 decks +89% synergy
Mirkwood Bats
100% of 1 decks +80% synergy
Ziatora, the Incinerator
100% of 2 decks +80% synergy
Gluttonous Hellkite
100% of 1 decks +74% synergy
Terror Ballista
50% of 2 decks +50% synergy
Myojin of Towering Might
50% of 2 decks +50% synergy
Myojin of Grim Betrayal
50% of 2 decks +50% synergy
Elvish Aberration
50% of 2 decks +50% synergy
Myojin of Roaring Blades
50% of 2 decks +50% synergy
Desolation Twin
50% of 2 decks +50% synergy
Tana, the Bloodsower
50% of 2 decks +50% synergy
Skitterbeam Battalion
50% of 2 decks +50% synergy
World Breaker
50% of 2 decks +50% synergy
Aggressive Mammoth
50% of 2 decks +49% synergy
Savageborn Hydra
50% of 2 decks +49% synergy
Rakshasa Debaser
50% of 2 decks +49% synergy
Spring-Leaf Avenger
50% of 2 decks +49% synergy
Port Razer
50% of 2 decks +49% synergy
Genesis Hydra
50% of 2 decks +49% synergy
Cityscape Leveler
50% of 2 decks +49% synergy
Soul of the Harvest
50% of 2 decks +49% synergy
Ulamog's Crusher
50% of 2 decks +49% synergy
Squee, Goblin Nabob
50% of 2 decks +49% synergy
Moldgraf Monstrosity
50% of 2 decks +49% synergy
Molten Primordial
50% of 2 decks +49% synergy
Titan of Industry
50% of 2 decks +49% synergy
Bane of Bala Ged
50% of 2 decks +49% synergy
Golgari Thug
50% of 2 decks +48% synergy
Ulasht, the Hate Seed
50% of 2 decks +48% synergy
Drakuseth, Maw of Flames
50% of 2 decks +48% synergy
Utopia Mycon
50% of 2 decks +48% synergy
First Responder
50% of 2 decks +48% synergy
Hornet Queen
50% of 2 decks +48% synergy
Apex Altisaur
50% of 2 decks +48% synergy
Razaketh, the Foulblooded
50% of 2 decks +48% synergy
Verdant Force
50% of 2 decks +47% synergy
Flayer of the Hatebound
50% of 2 decks +47% synergy
Terastodon
50% of 2 decks +47% synergy
Undercellar Myconid
50% of 2 decks +47% synergy
Slimefoot, the Stowaway
50% of 2 decks +46% synergy
Karlach, Fury of Avernus
50% of 2 decks +46% synergy
Inferno Titan
50% of 2 decks +46% synergy
Nemata, Primeval Warden
50% of 2 decks +45% synergy
Temur Sabertooth
50% of 2 decks +45% synergy
Tendershoot Dryad
50% of 2 decks +45% synergy
Kethek, Crucible Goliath
50% of 2 decks +44% synergy
Kogla, the Titan Ape
50% of 2 decks +44% synergy
Instants
Nasty End
100% of 1 decks +96% synergy
Bitter Triumph
100% of 1 decks +95% synergy
Dark Ritual
100% of 2 decks +88% synergy
Beast Within
100% of 2 decks +58% synergy
Gruul Charm
50% of 2 decks +50% synergy
Desperate Ritual
50% of 2 decks +50% synergy
Unleash the Inferno
50% of 2 decks +48% synergy
Golgari Charm
50% of 2 decks +46% synergy
Pyroblast
50% of 2 decks +43% synergy
Rakdos Charm
50% of 2 decks +42% synergy
Artifact Mutation
50% of 2 decks +41% synergy
Thrill of Possibility
50% of 2 decks +40% synergy
Bedevil
50% of 2 decks +40% synergy
Entomb
50% of 2 decks +38% synergy
Abrupt Decay
50% of 2 decks +37% synergy
Heroic Intervention
50% of 2 decks +25% synergy
Terminate
50% of 2 decks +22% synergy
Sorceries
Squirming Emergence
100% of 1 decks +97% synergy
Rise of the Witch-king
100% of 1 decks +90% synergy
Riveteers Confluence
50% of 2 decks +48% synergy
Migration Path
50% of 2 decks +47% synergy
Diabolic Tutor
50% of 2 decks +46% synergy
Explore
50% of 2 decks +44% synergy
Life's Legacy
50% of 2 decks +41% synergy
Buried Alive
50% of 2 decks +39% synergy
Culling Ritual
50% of 2 decks +38% synergy
Reanimate
50% of 2 decks +31% synergy
Victimize
50% of 2 decks +25% synergy
Kodama's Reach
50% of 2 decks +17% synergy
Blasphemous Act
50% of 2 decks +9% synergy
Cultivate
50% of 2 decks +5% synergy
Utility Artifacts
Instrument of the Bards
50% of 2 decks +50% synergy
Nim Deathmantle
50% of 2 decks +49% synergy
Cauldron of Souls
50% of 2 decks +46% synergy
Phyrexian Altar
50% of 2 decks +39% synergy
Enchantments
Insidious Roots
100% of 1 decks +93% synergy
Ripples of Undeath
100% of 1 decks +82% synergy
Dragon Appeasement
50% of 2 decks +50% synergy
No Mercy
50% of 2 decks +49% synergy
Golgari Germination
50% of 2 decks +46% synergy
Moldervine Reclamation
50% of 2 decks +39% synergy
Garruk's Uprising
50% of 2 decks +30% synergy
Planeswalkers
Vivien on the Hunt
50% of 2 decks +48% synergy
Minsc & Boo, Timeless Heroes
50% of 2 decks +47% synergy
Utility Lands
Spinerock Knoll
50% of 2 decks +44% synergy
Temple of the False God
50% of 2 decks +41% synergy
Rogue's Passage
50% of 2 decks +36% synergy
Urborg, Tomb of Yawgmoth
50% of 2 decks +29% synergy
Mana Artifacts
Arcane Signet
100% of 2 decks +31% synergy
Sol Ring
100% of 2 decks +18% synergy
Commander's Sphere
50% of 2 decks +37% synergy
Rakdos Signet
50% of 2 decks +37% synergy
Golgari Signet
50% of 2 decks +37% synergy
Gruul Signet
50% of 2 decks +36% synergy
Fellwar Stone
50% of 2 decks +34% synergy
Lands
Cinder Glade
100% of 2 decks +54% synergy
Twisted Landscape
100% of 1 decks +51% synergy
Command Tower
100% of 2 decks +10% synergy
Temple of Malice
50% of 2 decks +40% synergy
Temple of Abandon
50% of 2 decks +38% synergy
Gruul Turf
50% of 2 decks +35% synergy
Temple of Malady
50% of 2 decks +33% synergy
Llanowar Wastes
50% of 2 decks +26% synergy
Woodland Cemetery
50% of 2 decks +20% synergy
Savage Lands
50% of 2 decks +2% synergy
Overgrown Tomb
50% of 2 decks -0% synergy
Stomping Ground
50% of 2 decks -1% synergy
Ziatora's Proving Ground
50% of 2 decks -4% synergy