Karn, the Great Creator + Doubling Cube + Umbral Mantle
Karn, the Great Creator
Doubling Cube
Umbral Mantle
Requires
Karn, the Great Creator must be on the battlefield.
Doubling Cube must be on the battlefield.
Umbral Mantle must be on the battlefield.
Doubling Cube does not have summoning sickness.
Mana needed: 
Steps
- Activate Karn's first loyalty ability by putting a loyalty counter on it, causing Doubling Cube to become an artifact creature until end of turn.
- Activate Umbral Mantle's equip ability by paying
, attaching it to Doubling Cube. - Float at least in your mana pool.
- Activate Doubling Cube by paying
and tapping it, adding at least 
. - Activate Doubling Cube by paying and untapping it, giving it +2/+2 until end of turn.
- Repeat from step 4.
Results
Infinitely large Doubling Cube until end of turn. Infinite mana permanents you control can produce.
Marvin, Murderous Mimic
0.42% of 716 decks
3 decks
Top Commanders
Karn, Silver Golem
1.04% of 1055 decks
11 decks
The Peregrine Dynamo
1.20% of 664 decks
8 decks
Omarthis, Ghostfire Initiate
0.39% of 1796 decks
7 decks
Karn, Legacy Reforged
0.15% of 4063 decks
6 decks
Liberator, Urza's Battlethopter
0.10% of 3039 decks
3 decks
Kozilek, Butcher of Truth
0.22% of 890 decks
2 decks
Zirda, the Dawnwaker
0.06% of 1744 decks
1 decks
Osgir, the Reconstructor
0.02% of 5657 decks
1 decks
Syr Ginger, the Meal Ender
0.05% of 1989 decks
1 decks
Tiana, Ship's Caretaker
0.37% of 271 decks
1 decks
Agatha of the Vile Cauldron
0.02% of 4015 decks
1 decks
Ulamog, the Infinite Gyre
0.39% of 257 decks
1 decks
Oswald Fiddlebender
0.06% of 1791 decks
1 decks
Kozilek, the Great Distortion
0.02% of 6127 decks
1 decks
Maga, Traitor to Mortals
0.51% of 198 decks
1 decks
Vhal, Candlekeep Researcher // Raised by Giants
0.20% of 492 decks
1 decks
Slobad, Iron Goblin
0.18% of 548 decks
1 decks
High Synergy Cards
Rings of Brighthearth
88% of 56 decks
+86% synergy
Forsaken Monument
85% of 55 decks
+84% synergy
Mystic Forge
84% of 56 decks
+81% synergy
Staff of Domination
80% of 56 decks
+79% synergy
Voltaic Construct
79% of 56 decks
+78% synergy
Sensei's Divining Top
80% of 56 decks
+75% synergy
Foundry Inspector
79% of 56 decks
+74% synergy
Voltaic Key
75% of 56 decks
+74% synergy
Metalworker
71% of 56 decks
+71% synergy
Ugin, the Ineffable
71% of 56 decks
+70% synergy
Top Cards
Swords to Plowshares
100% of 4 decks
+37% synergy
Basalt Monolith
93% of 56 decks
+90% synergy
Thran Dynamo
89% of 56 decks
+84% synergy
Clock of Omens
68% of 56 decks
+67% synergy
Mana Vault
68% of 56 decks
+61% synergy
Everflowing Chalice
64% of 56 decks
+60% synergy
Krark-Clan Ironworks
62% of 56 decks
+61% synergy
Mind Stone
61% of 56 decks
+43% synergy
Glaring Fleshraker
60% of 15 decks
+58% synergy
Grim Monolith
55% of 56 decks
+53% synergy
Creatures
Selvala, Heart of the Wilds
75% of 4 decks
+70% synergy
Phyrexian Metamorph
75% of 4 decks
+68% synergy
Seedborn Muse
75% of 4 decks
+67% synergy
Goblin Welder
60% of 5 decks
+57% synergy
Scrap Trawler
50% of 56 decks
+48% synergy
Palladium Myr
48% of 56 decks
+46% synergy
Walking Ballista
48% of 56 decks
+46% synergy
Cogwork Assembler
43% of 56 decks
+43% synergy
Karn, Legacy Reforged
40% of 42 decks
+40% synergy
Karn, Silver Golem
39% of 56 decks
+39% synergy
Liberator, Urza's Battlethopter
38% of 52 decks
+37% synergy
Myr Retriever
38% of 56 decks
+35% synergy
Kuldotha Forgemaster
36% of 56 decks
+35% synergy
Mycosynth Golem
32% of 56 decks
+32% synergy
Junk Diver
30% of 56 decks
+30% synergy
Wurmcoil Engine
30% of 56 decks
+28% synergy
Syr Ginger, the Meal Ender
30% of 33 decks
+29% synergy
Myr Welder
27% of 56 decks
+27% synergy
Jhoira's Familiar
27% of 56 decks
+25% synergy
Coretapper
25% of 56 decks
+25% synergy
Myr Galvanizer
25% of 56 decks
+25% synergy
Blightsteel Colossus
25% of 56 decks
+23% synergy
Cathodion
23% of 56 decks
+23% synergy
Myr Battlesphere
23% of 56 decks
+21% synergy
Dross Scorpion
21% of 56 decks
+21% synergy
Kozilek, Butcher of Truth
21% of 56 decks
+20% synergy
Skittering Cicada
21% of 38 decks
+20% synergy
Wandering Archaic
20% of 54 decks
+19% synergy
Soul of New Phyrexia
20% of 56 decks
+19% synergy
Crackdown Construct
18% of 56 decks
+18% synergy
Scarecrone
18% of 56 decks
+18% synergy
Ulamog, the Defiler
18% of 17 decks
+16% synergy
Toymaker
16% of 56 decks
+16% synergy
Painter's Servant
16% of 56 decks
+16% synergy
Hedron Crawler
16% of 56 decks
+16% synergy
Void Winnower
16% of 56 decks
+15% synergy
Crashing Drawbridge
16% of 56 decks
+15% synergy
Shimmer Myr
16% of 56 decks
+14% synergy
Cryptothrall
15% of 52 decks
+15% synergy
Spawnsire of Ulamog
14% of 56 decks
+14% synergy
Scrapyard Recombiner
14% of 56 decks
+14% synergy
Endbringer
14% of 56 decks
+13% synergy
Millikin
14% of 56 decks
+13% synergy
Metalwork Colossus
14% of 56 decks
+13% synergy
Platinum Angel
14% of 56 decks
+13% synergy
Solemn Simulacrum
14% of 56 decks
+0% synergy
Phyrexian Triniform
13% of 54 decks
+12% synergy
Manakin
12% of 56 decks
+12% synergy
Workshop Assistant
12% of 56 decks
+12% synergy
Stuffy Doll
12% of 56 decks
+12% synergy
Instants
Cyclonic Rift
75% of 4 decks
+47% synergy
Path to Exile
75% of 4 decks
+29% synergy
Null Elemental Blast
41% of 17 decks
+40% synergy
Kozilek's Command
33% of 15 decks
+32% synergy
Eldritch Immunity
33% of 15 decks
+32% synergy
Warping Wail
23% of 56 decks
+22% synergy
Eldrazi Confluence
20% of 15 decks
+19% synergy
Spatial Contortion
18% of 56 decks
+18% synergy
Desecrate Reality
13% of 38 decks
+12% synergy
Not of This World
11% of 56 decks
+10% synergy
Scour from Existence
9% of 56 decks
+8% synergy
Titan's Presence
7% of 56 decks
+7% synergy
Sorceries
Faithless Looting
60% of 5 decks
+43% synergy
All Is Dust
41% of 56 decks
+39% synergy
Rise of the Eldrazi
16% of 38 decks
+15% synergy
Introduction to Annihilation
13% of 54 decks
+13% synergy
Introduction to Prophecy
11% of 54 decks
+11% synergy
Utility Artifacts
Unwinding Clock
55% of 56 decks
+53% synergy
Ashnod's Altar
55% of 56 decks
+48% synergy
Manifold Key
54% of 56 decks
+52% synergy
Sculpting Steel
50% of 56 decks
+48% synergy
Chimil, the Inner Sun
48% of 29 decks
+46% synergy
Mycosynth Lattice
48% of 56 decks
+47% synergy
Cloud Key
46% of 56 decks
+45% synergy
The One Ring
43% of 46 decks
+35% synergy
Heartstone
43% of 56 decks
+42% synergy
Expedition Map
38% of 56 decks
+34% synergy
Lightning Greaves
38% of 56 decks
+12% synergy
Aetherflux Reservoir
36% of 56 decks
+32% synergy
Mirage Mirror
32% of 56 decks
+31% synergy
Moonsilver Key
32% of 53 decks
+31% synergy
Magistrate's Scepter
30% of 56 decks
+30% synergy
Darksteel Forge
30% of 56 decks
+29% synergy
Planar Bridge
29% of 56 decks
+28% synergy
Nim Deathmantle
29% of 56 decks
+28% synergy
Lithoform Engine
27% of 55 decks
+26% synergy
Spine of Ish Sah
27% of 56 decks
+26% synergy
Vexing Bauble
25% of 16 decks
+23% synergy
Swiftfoot Boots
25% of 56 decks
-3% synergy
Realmbreaker, the Invasion Tree
24% of 42 decks
+23% synergy
Darksteel Monolith
24% of 38 decks
+23% synergy
Sword of the Paruns
23% of 56 decks
+23% synergy
Mind's Eye
23% of 56 decks
+22% synergy
Contagion Engine
23% of 56 decks
+22% synergy
Hedron Archive
23% of 56 decks
+20% synergy
Animation Module
21% of 56 decks
+21% synergy
Mirrorworks
21% of 56 decks
+21% synergy
Semblance Anvil
21% of 56 decks
+21% synergy
Helm of Awakening
21% of 56 decks
+21% synergy
Helm of the Host
21% of 56 decks
+18% synergy
Nevinyrral's Disk
20% of 56 decks
+18% synergy
Phyrexian Altar
20% of 56 decks
+16% synergy
Maskwood Nexus
19% of 54 decks
+16% synergy
Memory Jar
18% of 56 decks
+18% synergy
Blasting Station
18% of 56 decks
+17% synergy
The Immortal Sun
18% of 56 decks
+17% synergy
Tamiyo's Journal
18% of 56 decks
+17% synergy
Strionic Resonator
18% of 56 decks
+15% synergy
Portal to Phyrexia
17% of 52 decks
+15% synergy
Horizon Stone
17% of 54 decks
+16% synergy
Commander's Plate
17% of 54 decks
+14% synergy
Salvaging Station
16% of 56 decks
+16% synergy
Energy Chamber
16% of 56 decks
+16% synergy
Grinding Station
16% of 56 decks
+15% synergy
Scroll Rack
16% of 56 decks
+15% synergy
Agatha's Soul Cauldron
15% of 33 decks
+14% synergy
Grindstone
14% of 56 decks
+14% synergy
Enchantments
Freed from the Real
75% of 4 decks
+73% synergy
Rhystic Study
75% of 4 decks
+47% synergy
Echoes of Eternity
41% of 17 decks
+39% synergy
Planeswalkers
Karn, Living Legacy
30% of 53 decks
+30% synergy
Ugin, the Spirit Dragon
20% of 56 decks
+18% synergy
Karn Liberated
12% of 56 decks
+12% synergy
Karn, Scion of Urza
9% of 56 decks
+9% synergy
Utility Lands
Ancient Den
75% of 4 decks
+70% synergy
Inventors' Fair
71% of 56 decks
+68% synergy
Buried Ruin
71% of 56 decks
+66% synergy
Great Furnace
60% of 5 decks
+54% synergy
Urza's Saga
59% of 54 decks
+52% synergy
War Room
57% of 54 decks
+51% synergy
Deserted Temple
57% of 56 decks
+57% synergy
Darksteel Citadel
57% of 56 decks
+53% synergy
Ancient Tomb
54% of 56 decks
+43% synergy
Scorched Ruins
52% of 56 decks
+52% synergy
Urza's Power Plant
52% of 56 decks
+50% synergy
Urza's Mine
52% of 56 decks
+50% synergy
Urza's Tower
52% of 56 decks
+50% synergy
Thespian's Stage
50% of 56 decks
+47% synergy
Crystal Vein
46% of 56 decks
+45% synergy
Reliquary Tower
46% of 56 decks
+17% synergy
Urza's Workshop
40% of 52 decks
+40% synergy
Command Beacon
38% of 56 decks
+33% synergy
Sanctum of Ugin
36% of 56 decks
+35% synergy
Shrine of the Forsaken Gods
36% of 56 decks
+34% synergy
Mishra's Workshop
34% of 56 decks
+34% synergy
Zhalfirin Void
32% of 56 decks
+31% synergy
Fomori Vault
29% of 17 decks
+28% synergy
Rogue's Passage
29% of 56 decks
+9% synergy
Emergence Zone
27% of 56 decks
+24% synergy
Strip Mine
27% of 56 decks
+24% synergy
Treasure Vault
26% of 54 decks
+23% synergy
Bonders' Enclave
25% of 55 decks
+23% synergy
Miren, the Moaning Well
25% of 56 decks
+25% synergy
Blast Zone
25% of 56 decks
+24% synergy
Karn's Bastion
25% of 56 decks
+20% synergy
Mikokoro, Center of the Sea
23% of 56 decks
+21% synergy
Temple of the False God
23% of 56 decks
+14% synergy
Petrified Field
21% of 56 decks
+21% synergy
Wasteland
21% of 56 decks
+20% synergy
Arcane Lighthouse
21% of 56 decks
+20% synergy
Nephalia Academy
20% of 56 decks
+19% synergy
Sequestered Stash
20% of 56 decks
+19% synergy
Blasted Landscape
20% of 56 decks
+19% synergy
Geier Reach Sanitarium
20% of 56 decks
+16% synergy
Haunted Fengraf
18% of 56 decks
+18% synergy
Urza's Factory
18% of 56 decks
+17% synergy
City of Traitors
18% of 56 decks
+17% synergy
High Market
18% of 56 decks
+15% synergy
Tomb of the Spirit Dragon
16% of 56 decks
+15% synergy
Vesuva
16% of 56 decks
+15% synergy
Scavenger Grounds
16% of 56 decks
+13% synergy
Nesting Grounds
15% of 55 decks
+13% synergy
Cryptic Caves
14% of 56 decks
+14% synergy
Eye of Ugin
14% of 56 decks
+14% synergy
Mana Artifacts
Sol Ring
100% of 56 decks
+16% synergy
Mana Crypt
52% of 56 decks
+43% synergy
Thought Vessel
46% of 56 decks
+30% synergy
Gilded Lotus
36% of 56 decks
+32% synergy
Liquimetal Torque
35% of 54 decks
+32% synergy
Worn Powerstone
32% of 56 decks
+30% synergy
Mox Opal
32% of 56 decks
+28% synergy
Dreamstone Hedron
29% of 56 decks
+28% synergy
Chromatic Orrery
27% of 55 decks
+26% synergy
Arcane Signet
23% of 56 decks
-49% synergy
Mox Diamond
20% of 56 decks
+15% synergy
Jeweled Lotus
19% of 54 decks
+13% synergy
The Mightstone and Weakstone
17% of 52 decks
+17% synergy
The Irencrag
15% of 33 decks
+14% synergy
Empowered Autogenerator
14% of 56 decks
+14% synergy
Paradise Mantle
14% of 56 decks
+14% synergy
Fellwar Stone
14% of 56 decks
-7% synergy
Powerstone Shard
12% of 56 decks
+12% synergy
Honor-Worn Shaku
12% of 56 decks
+12% synergy
Lotus Petal
12% of 56 decks
+6% synergy
Blinkmoth Urn
11% of 56 decks
+10% synergy
Staff of Compleation
9% of 47 decks
+7% synergy
Stonespeaker Crystal
8% of 53 decks
+7% synergy
Thran Turbine
7% of 56 decks
+7% synergy
Coveted Jewel
7% of 56 decks
+6% synergy
Lion's Eye Diamond
7% of 56 decks
+5% synergy
Commander's Sphere
7% of 56 decks
-8% synergy
Lotus Bloom
5% of 56 decks
+5% synergy
Chromatic Star
5% of 56 decks
+5% synergy
Lands
Battlefield Forge
100% of 3 decks
+74% synergy
Sacred Foundry
100% of 3 decks
+64% synergy
Urza's Cave
53% of 17 decks
+49% synergy
The Mycosynth Gardens
50% of 48 decks
+48% synergy
Planar Nexus
35% of 17 decks
+34% synergy
Gallifrey Council Chamber
27% of 33 decks
+27% synergy
Talon Gates of Madara
27% of 15 decks
+23% synergy
Cavern of Souls
23% of 56 decks
+16% synergy
Hall of Tagsin
23% of 52 decks
+23% synergy
The Grey Havens
23% of 39 decks
+21% synergy
Crystal Grotto
21% of 53 decks
+20% synergy
Gemstone Caverns
14% of 56 decks
+9% synergy
Demolition Field
13% of 52 decks
+10% synergy
Command Tower
12% of 56 decks
-61% synergy
Plaza of Heroes
8% of 53 decks
+4% synergy
Exotic Orchard
7% of 56 decks
-28% synergy
Mirrex
6% of 48 decks
+5% synergy
Ash Barrens
5% of 56 decks
+1% synergy
Mana Confluence
5% of 56 decks
-2% synergy