Haakon, Stromgald Scourge + Morophon, the Boundless + Nameless Inversion + Semblance Anvil

Haakon, Stromgald Scourge
Morophon, the Boundless
Nameless Inversion
Semblance Anvil

Requires
Haakon, Stromgald Scourge must be on the battlefield. Morophon, the Boundless must be on the battlefield. Nameless Inversion must be in hand, or in the graveyard. Semblance Anvil must be on the battlefield. There is an instant card exiled with Semblance Anvil.
Steps
  1. Cast Nameless Inversion from your graveyard, as it is a Knight card, by paying 0 due to Semblance Anvil and Morophon, giving a creature +3/-3 until end of turn.
  2. If the creature has toughness 0 or less, the creature dies as a state-based action.
  3. Repeat as desired.
Results
Reduce any number of target creatures' toughness to zero. Reduce any creature's toughness to zero when it enters the battlefield.

Morophon, the Boundless
0.02% of 9885 decks 2 decks
The Fourteenth Doctor // Clara Oswald
0.11% of 909 decks 1 decks
New Cards
Leyline of Mutation
100% of 1 decks +82% synergy
Creatures
Rukarumel, Biologist
100% of 1 decks +98% synergy
Ramses, Assassin Lord
100% of 1 decks +98% synergy
Ancient Brass Dragon
100% of 1 decks +96% synergy
Mirror Entity
100% of 3 decks +94% synergy
Khorvath Brightflame
67% of 3 decks +66% synergy
Knight Exemplar
67% of 3 decks +66% synergy
Shapesharer
67% of 3 decks +65% synergy
Sylvia Brightspear
67% of 3 decks +65% synergy
Amoeboid Changeling
67% of 3 decks +64% synergy
Unsettled Mariner
67% of 3 decks +63% synergy
Realmwalker
67% of 3 decks +58% synergy
Mercenary Knight
50% of 2 decks +50% synergy
Stillmoon Cavalier
50% of 2 decks +50% synergy
Breathless Knight
50% of 2 decks +50% synergy
Josu Vess, Lich Knight
50% of 2 decks +50% synergy
Midnight Reaper
50% of 2 decks +50% synergy
Smitten Swordmaster
50% of 2 decks +50% synergy
Herald of Slaanesh
50% of 2 decks +50% synergy
Stormfist Crusader
50% of 2 decks +50% synergy
Ethersworn Adjudicator
50% of 2 decks +50% synergy
Vodalian Wave-Knight
50% of 2 decks +50% synergy
Olivia, Mobilized for War
50% of 2 decks +50% synergy
Corpse Knight
50% of 2 decks +50% synergy
Cairn Wanderer
50% of 2 decks +50% synergy
Peri Brown
50% of 2 decks +50% synergy
Syr Konrad, the Grim
50% of 2 decks +50% synergy
Herald of Hoofbeats
50% of 2 decks +49% synergy
Adric, Mathematical Genius
50% of 2 decks +49% synergy
The Fifteenth Doctor
50% of 2 decks +49% synergy
The Fugitive Doctor
50% of 2 decks +49% synergy
The Tenth Doctor
50% of 2 decks +49% synergy
The Seventh Doctor
50% of 2 decks +49% synergy
The Twelfth Doctor
50% of 2 decks +49% synergy
The Eleventh Doctor
50% of 2 decks +49% synergy
The First Doctor
50% of 2 decks +49% synergy
The Third Doctor
50% of 2 decks +49% synergy
Éowyn, Fearless Knight
50% of 2 decks +49% synergy
The Fifth Doctor
50% of 2 decks +49% synergy
The Thirteenth Doctor
50% of 2 decks +49% synergy
The War Doctor
50% of 2 decks +49% synergy
The Eighth Doctor
50% of 2 decks +49% synergy
Skeletal Changeling
50% of 2 decks +49% synergy
The Ninth Doctor
50% of 2 decks +49% synergy
The Fourth Doctor
50% of 2 decks +49% synergy
The Second Doctor
50% of 2 decks +48% synergy
Graveshifter
50% of 2 decks +48% synergy
K-9, Mark I
50% of 2 decks +47% synergy
The Sixth Doctor
50% of 2 decks +47% synergy
Changeling Outcast
50% of 2 decks +46% synergy
Roaming Throne
50% of 2 decks +33% synergy
Instants
Entomb
100% of 2 decks +98% synergy
Crib Swap
100% of 3 decks +96% synergy
Time Lord Regeneration
50% of 2 decks +49% synergy
Everybody Lives!
50% of 2 decks +48% synergy
Standardize
33% of 3 decks +33% synergy
Wings of Velis Vel
33% of 3 decks +33% synergy
Absorb Identity
33% of 3 decks +33% synergy
Blades of Velis Vel
33% of 3 decks +33% synergy
Shields of Velis Vel
33% of 3 decks +33% synergy
Crop Rotation
33% of 3 decks +28% synergy
Chaos Warp
33% of 3 decks +28% synergy
Beast Within
33% of 3 decks +18% synergy
Heroic Intervention
33% of 3 decks +12% synergy
Sorceries
Jarad's Orders
100% of 2 decks +100% synergy
Final Parting
100% of 2 decks +99% synergy
Buried Alive
100% of 2 decks +99% synergy
Haunting Voyage
100% of 2 decks +99% synergy
Kindred Dominance
100% of 2 decks +95% synergy
Cultivate
67% of 3 decks +29% synergy
Necromantic Selection
50% of 2 decks +50% synergy
Twice Upon a Time
50% of 2 decks +49% synergy
The Five Doctors
50% of 2 decks +49% synergy
Everything Comes to Dust
50% of 2 decks +49% synergy
Patriarch's Bidding
50% of 2 decks +44% synergy
Crux of Fate
50% of 2 decks +41% synergy
Traumatize
33% of 3 decks +33% synergy
Flood of Tears
33% of 3 decks +33% synergy
Divine Reckoning
33% of 3 decks +33% synergy
Distant Melody
33% of 3 decks +26% synergy
Three Visits
33% of 3 decks +9% synergy
Kodama's Reach
33% of 3 decks +8% synergy
Utility Artifacts
Urza's Incubator
100% of 3 decks +87% synergy
Altar of Dementia
67% of 3 decks +66% synergy
Phyrexian Altar
67% of 3 decks +65% synergy
Maskwood Nexus
67% of 3 decks +60% synergy
Vanquisher's Banner
67% of 3 decks +58% synergy
Herald's Horn
67% of 3 decks +49% synergy
Lightning Greaves
67% of 3 decks +48% synergy
TARDIS
50% of 2 decks +49% synergy
Ashes of the Fallen
33% of 3 decks +33% synergy
Pyre of Heroes
33% of 3 decks +33% synergy
Enchantments
Etchings of the Chosen
100% of 2 decks +99% synergy
Black Market Connections
100% of 1 decks +95% synergy
Kindred Discovery
67% of 3 decks +55% synergy
Knights' Charge
50% of 2 decks +50% synergy
The Eleventh Hour
50% of 2 decks +49% synergy
An Unearthly Child
50% of 2 decks +49% synergy
Conspiracy
50% of 2 decks +49% synergy
Gallifrey Stands
50% of 2 decks +49% synergy
Arcane Adaptation
33% of 3 decks +32% synergy
Leyline of Anticipation
33% of 3 decks +31% synergy
Descendants' Path
33% of 3 decks +30% synergy
Utility Lands
Desolate Lighthouse
67% of 3 decks +66% synergy
Geier Reach Sanitarium
67% of 3 decks +66% synergy
Vault of the Archangel
50% of 2 decks +49% synergy
Trenzalore Clocktower
50% of 2 decks +49% synergy
Takenuma, Abandoned Mire
50% of 2 decks +48% synergy
Emergence Zone
33% of 3 decks +32% synergy
Alchemist's Refuge
33% of 3 decks +32% synergy
Mutavault
33% of 3 decks +32% synergy
Eiganjo, Seat of the Empire
33% of 3 decks +31% synergy
Command Beacon
33% of 3 decks +31% synergy
Buried Ruin
33% of 3 decks +31% synergy
Eldrazi Temple
33% of 3 decks +29% synergy
Rogue's Passage
33% of 3 decks +28% synergy
Temple of the False God
33% of 3 decks +27% synergy
Reliquary Tower
33% of 3 decks +8% synergy
Mana Artifacts
Sol Ring
100% of 3 decks +22% synergy
Thran Dynamo
67% of 3 decks +62% synergy
Chromatic Lantern
67% of 3 decks +14% synergy
Sonic Screwdriver
50% of 2 decks +48% synergy
Relic of Legends
50% of 2 decks +40% synergy
Mana Vault
33% of 3 decks +27% synergy
Lands
Secluded Courtyard
100% of 3 decks +84% synergy
Blood Crypt
100% of 2 decks +77% synergy
Watery Grave
100% of 2 decks +75% synergy
Godless Shrine
100% of 2 decks +74% synergy
Overgrown Tomb
100% of 2 decks +70% synergy
The World Tree
100% of 2 decks +66% synergy
Command Tower
100% of 3 decks +12% synergy
Unclaimed Territory
67% of 3 decks +50% synergy
Polluted Delta
67% of 3 decks +43% synergy
Flooded Strand
67% of 3 decks +42% synergy
Hallowed Fountain
67% of 3 decks +39% synergy
Stomping Ground
67% of 3 decks +37% synergy
Demolition Field
50% of 2 decks +49% synergy
Gallifrey Council Chamber
50% of 2 decks +49% synergy
Drowned Catacomb
50% of 2 decks +48% synergy
Shipwreck Marsh
50% of 2 decks +47% synergy
The Mycosynth Gardens
50% of 2 decks +47% synergy
Woodland Cemetery
50% of 2 decks +47% synergy
Sunken Hollow
50% of 2 decks +41% synergy
Plaza of Heroes
50% of 2 decks +40% synergy
Port Town
33% of 3 decks +32% synergy
Rupture Spire
33% of 3 decks +32% synergy
Sundown Pass
33% of 3 decks +31% synergy
Stormcarved Coast
33% of 3 decks +31% synergy
Clifftop Retreat
33% of 3 decks +31% synergy
Deserted Beach
33% of 3 decks +31% synergy
Sulfur Falls
33% of 3 decks +31% synergy
Overgrown Farmland
33% of 3 decks +30% synergy
Dreamroot Cascade
33% of 3 decks +30% synergy
Ash Barrens
33% of 3 decks +27% synergy
Forbidden Orchard
33% of 3 decks +24% synergy
Prairie Stream
33% of 3 decks +23% synergy
Cinder Glade
33% of 3 decks +22% synergy
Cavern of Souls
33% of 3 decks +18% synergy
Reflecting Pool
33% of 3 decks +18% synergy
Mana Confluence
33% of 3 decks +14% synergy
City of Brass
33% of 3 decks +13% synergy
Sacred Foundry
33% of 3 decks +10% synergy
Steam Vents
33% of 3 decks +8% synergy
Arid Mesa
33% of 3 decks +8% synergy
Windswept Heath
33% of 3 decks +6% synergy
Breeding Pool
33% of 3 decks +3% synergy
Temple Garden
33% of 3 decks +3% synergy
Path of Ancestry
33% of 3 decks -7% synergy
Exotic Orchard
33% of 3 decks -29% synergy