Training Grounds + Grim Monolith + Karn, Silver Golem

Training Grounds
Grim Monolith
Karn, Silver Golem

Requires
Training Grounds must be on the battlefield. Grim Monolith must be on the battlefield. Karn, Silver Golem must be on the battlefield.
Steps
  1. Activate Grim Monolith's first ability by tapping it, adding .
  2. Activate Karn by paying 1, causing Grim Monolith to become an artifact creature until end of turn.
  3. Activate Grim Monolith's last ability by paying 2, untapping it.
  4. Repeat step 1 and 3.
Results
Infinite colorless mana.

Urza, Lord High Artificer
0.08% of 14248 decks 11 decks
Memnarch
0.24% of 1635 decks 4 decks
Kinnan, Bonder Prodigy
0.01% of 13904 decks 2 decks
Oona, Queen of the Fae
0.11% of 1804 decks 2 decks
Lord of the Nazgûl
0.01% of 12649 decks 1 decks
Katsumasa, the Animator
0.32% of 313 decks 1 decks
Tasigur, the Golden Fang
0.02% of 6219 decks 1 decks
Sydri, Galvanic Genius
0.04% of 2358 decks 1 decks
Kenrith, the Returned King
0.00% of 23932 decks 1 decks
Ravos, Soultender // Thrasios, Triton Hero
0.22% of 458 decks 1 decks
Barrin, Master Wizard
0.64% of 157 decks 1 decks
Niv-Mizzet, Dracogenius
0.60% of 166 decks 1 decks
Mishra, Eminent One
0.01% of 7233 decks 1 decks
Urza, Chief Artificer
0.01% of 14250 decks 1 decks
Thrasios, Triton Hero // Tymna the Weaver
0.01% of 7229 decks 1 decks
Emry, Lurker of the Loch
0.02% of 4677 decks 1 decks
Muzzio, Visionary Architect
0.19% of 538 decks 1 decks
High Synergy Cards
Biomancer's Familiar
83% of 6 decks +81% synergy
Rings of Brighthearth
59% of 32 decks +58% synergy
Academy Ruins
62% of 32 decks +58% synergy
Inventors' Fair
56% of 32 decks +53% synergy
Urza's Saga
59% of 32 decks +52% synergy
Tezzeret the Seeker
53% of 32 decks +51% synergy
Fabricate
56% of 32 decks +51% synergy
Metalworker
50% of 32 decks +50% synergy
Mycosynth Lattice
50% of 32 decks +49% synergy
Mana Drain
62% of 32 decks +48% synergy
Top Cards
Rhystic Study
53% of 32 decks +27% synergy
Counterspell
53% of 32 decks +11% synergy
Unwinding Clock
50% of 32 decks +47% synergy
Dramatic Reversal
50% of 32 decks +45% synergy
Voltaic Construct
47% of 32 decks +47% synergy
Sensei's Divining Top
47% of 32 decks +42% synergy
Fierce Guardianship
47% of 32 decks +29% synergy
Voltaic Key
44% of 32 decks +43% synergy
Karn, the Great Creator
44% of 32 decks +43% synergy
Manifold Key
41% of 32 decks +39% synergy
Game Changers
Enlightened Tutor
80% of 5 decks +63% synergy
Mana Vault
75% of 32 decks +69% synergy
Cyclonic Rift
66% of 32 decks +39% synergy
Vampiric Tutor
60% of 10 decks +43% synergy
Demonic Tutor
60% of 10 decks +39% synergy
Force of Will
50% of 32 decks +39% synergy
The One Ring
47% of 32 decks +39% synergy
Chrome Mox
41% of 32 decks +34% synergy
Ancient Tomb
41% of 32 decks +31% synergy
Imperial Seal
40% of 10 decks +34% synergy
Creatures
Seedborn Muse
50% of 6 decks +42% synergy
Forensic Gadgeteer
38% of 21 decks +36% synergy
Etherium Sculptor
38% of 32 decks +32% synergy
Phyrexian Metamorph
38% of 32 decks +30% synergy
Padeem, Consul of Innovation
34% of 32 decks +31% synergy
Emry, Lurker of the Loch
34% of 32 decks +30% synergy
Pili-Pala
31% of 32 decks +31% synergy
Master Transmuter
31% of 32 decks +30% synergy
Blightsteel Colossus
31% of 32 decks +30% synergy
Grand Architect
28% of 32 decks +28% synergy
Walking Ballista
28% of 32 decks +26% synergy
Spellskite
28% of 32 decks +25% synergy
Sai, Master Thopterist
28% of 32 decks +25% synergy
Foundry Inspector
28% of 32 decks +24% synergy
Urza, Lord High Artificer
25% of 32 decks +22% synergy
The Reality Chip
25% of 32 decks +21% synergy
Trinket Mage
22% of 32 decks +20% synergy
Jin-Gitaxias, Progress Tyrant
22% of 32 decks +19% synergy
Hullbreaker Horror
22% of 32 decks +15% synergy
Vedalken Archmage
19% of 32 decks +18% synergy
Myr Retriever
19% of 32 decks +17% synergy
Mycosynth Golem
16% of 32 decks +15% synergy
Karn, Legacy Reforged
16% of 32 decks +15% synergy
Trophy Mage
16% of 32 decks +14% synergy
Palladium Myr
16% of 32 decks +14% synergy
Thought Monitor
16% of 32 decks +12% synergy
Consecrated Sphinx
16% of 32 decks +11% synergy
Displacer Kitten
16% of 32 decks +10% synergy
Thassa's Oracle
16% of 32 decks +9% synergy
Filigree Sages
12% of 32 decks +12% synergy
Memnarch
12% of 32 decks +12% synergy
Palinchron
12% of 32 decks +12% synergy
Arcum Dagsson
12% of 32 decks +12% synergy
Kuldotha Forgemaster
12% of 32 decks +12% synergy
Liberator, Urza's Battlethopter
12% of 32 decks +11% synergy
Master of Etherium
12% of 32 decks +11% synergy
Myr Battlesphere
12% of 32 decks +11% synergy
Gilded Drake
12% of 32 decks +11% synergy
Ornithopter
12% of 32 decks +11% synergy
Cyberdrive Awakener
12% of 32 decks +10% synergy
Faerie Mastermind
12% of 32 decks +6% synergy
Myr Welder
9% of 32 decks +9% synergy
Traxos, Scourge of Kroog
9% of 32 decks +9% synergy
Treasure Mage
9% of 32 decks +9% synergy
Thopter Assembly
9% of 32 decks +9% synergy
Darksteel Colossus
9% of 32 decks +9% synergy
Katsumasa, the Animator
9% of 32 decks +9% synergy
Memnite
9% of 32 decks +9% synergy
Teferi, Mage of Zhalfir
9% of 32 decks +9% synergy
Drift of Phantasms
9% of 32 decks +8% synergy
Instants
Teferi's Protection
60% of 5 decks +41% synergy
Swords to Plowshares
60% of 5 decks -3% synergy
Dark Ritual
40% of 10 decks +17% synergy
Whir of Invention
34% of 32 decks +32% synergy
Force of Negation
31% of 32 decks +23% synergy
Mystical Tutor
31% of 32 decks +17% synergy
Brainstorm
31% of 32 decks +12% synergy
Deadly Rollick
30% of 10 decks +19% synergy
Swan Song
28% of 32 decks +12% synergy
Pact of Negation
25% of 32 decks +18% synergy
Capsize
19% of 32 decks +18% synergy
Blue Sun's Zenith
19% of 32 decks +16% synergy
Muddle the Mixture
19% of 32 decks +14% synergy
An Offer You Can't Refuse
19% of 32 decks -3% synergy
Negate
19% of 32 decks -4% synergy
Cryptic Command
16% of 32 decks +14% synergy
Flusterstorm
16% of 32 decks +9% synergy
Archmage's Charm
12% of 32 decks +11% synergy
March of Swirling Mist
12% of 32 decks +9% synergy
High Tide
12% of 32 decks +9% synergy
Arcane Denial
12% of 32 decks -8% synergy
Intuition
9% of 32 decks +8% synergy
Mana Leak
9% of 32 decks +7% synergy
Narset's Reversal
9% of 32 decks +6% synergy
Pongify
9% of 32 decks -2% synergy
Sorceries
Transmute Artifact
31% of 32 decks +30% synergy
Reshape
31% of 32 decks +30% synergy
Windfall
22% of 32 decks +9% synergy
Rise and Shine
19% of 32 decks +17% synergy
Merchant Scroll
19% of 32 decks +17% synergy
Ponder
16% of 32 decks +3% synergy
Thoughtcast
12% of 32 decks +9% synergy
Solve the Equation
12% of 32 decks +9% synergy
Argivian Restoration
9% of 32 decks +9% synergy
Rite of Replication
9% of 32 decks +6% synergy
Preordain
9% of 32 decks -1% synergy
Utility Artifacts
Darksteel Forge
38% of 32 decks +36% synergy
Isochron Scepter
38% of 32 decks +35% synergy
Mystic Forge
38% of 32 decks +35% synergy
Lotus Petal
34% of 32 decks +28% synergy
Staff of Domination
31% of 32 decks +30% synergy
Jeweled Lotus
28% of 32 decks +24% synergy
Cloud Key
25% of 32 decks +23% synergy
Mind Stone
25% of 32 decks +8% synergy
Heartstone
22% of 32 decks +21% synergy
Tormod's Crypt
22% of 32 decks +21% synergy
Nevinyrral's Disk
22% of 32 decks +21% synergy
Lithoform Engine
22% of 32 decks +21% synergy
Lightning Greaves
22% of 32 decks -3% synergy
Swiftfoot Boots
22% of 32 decks -6% synergy
Clock of Omens
19% of 32 decks +18% synergy
Elixir of Immortality
19% of 32 decks +17% synergy
Doubling Cube
16% of 32 decks +15% synergy
Winter Orb
16% of 32 decks +15% synergy
Umbral Mantle
16% of 32 decks +15% synergy
Illusionist's Bracers
16% of 32 decks +14% synergy
Mishra's Bauble
16% of 32 decks +14% synergy
Sculpting Steel
16% of 32 decks +13% synergy
Sapphire Medallion
16% of 32 decks +13% synergy
Aetherflux Reservoir
16% of 32 decks +12% synergy
The Blackstaff of Waterdeep
12% of 32 decks +12% synergy
Liquimetal Coating
12% of 32 decks +12% synergy
Urza's Bauble
12% of 32 decks +12% synergy
Welding Jar
12% of 32 decks +12% synergy
Aether Spellbomb
12% of 32 decks +11% synergy
Moonsilver Key
12% of 32 decks +11% synergy
Mirage Mirror
12% of 32 decks +11% synergy
Forsaken Monument
12% of 32 decks +11% synergy
The Enigma Jewel
12% of 26 decks +11% synergy
Ring of Three Wishes
9% of 32 decks +9% synergy
Mirrorworks
9% of 32 decks +9% synergy
Spine of Ish Sah
9% of 32 decks +9% synergy
Vedalken Orrery
9% of 32 decks +8% synergy
Thousand-Year Elixir
9% of 32 decks +7% synergy
Howling Mine
9% of 32 decks +7% synergy
Basilisk Collar
9% of 32 decks +6% synergy
Mithril Coat
9% of 32 decks +5% synergy
Ashnod's Altar
9% of 32 decks +2% synergy
Skullclamp
9% of 32 decks -2% synergy
Enchantments
Mystic Remora
38% of 32 decks +20% synergy
Power Artifact
25% of 32 decks +25% synergy
Copy Artifact
22% of 32 decks +21% synergy
Efficient Construction
9% of 32 decks +8% synergy
Thopter Spy Network
9% of 32 decks +6% synergy
Planeswalkers
Tezzeret, Betrayer of Flesh
25% of 32 decks +24% synergy
Narset, Parter of Veils
22% of 32 decks +17% synergy
Ugin, the Ineffable
19% of 32 decks +17% synergy
Utility Lands
Seat of the Synod
47% of 32 decks +41% synergy
Darksteel Citadel
41% of 32 decks +37% synergy
Vault of Whispers
30% of 10 decks +26% synergy
Cabal Coffers
30% of 10 decks +20% synergy
Bojuka Bog
30% of 10 decks +0% synergy
Tolaria West
28% of 32 decks +27% synergy
Reliquary Tower
28% of 32 decks -2% synergy
Urza's Power Plant
19% of 32 decks +17% synergy
Urza's Mine
19% of 32 decks +17% synergy
Urza's Tower
19% of 32 decks +17% synergy
Buried Ruin
19% of 32 decks +14% synergy
Mishra's Workshop
16% of 32 decks +15% synergy
Treasure Vault
16% of 32 decks +13% synergy
Minamo, School at Water's Edge
16% of 32 decks +11% synergy
Otawara, Soaring City
16% of 32 decks -1% synergy
Urza's Workshop
12% of 32 decks +12% synergy
Crystal Vein
12% of 32 decks +12% synergy
Strip Mine
12% of 32 decks +10% synergy
Castle Vantress
12% of 32 decks +9% synergy
Urborg, Tomb of Yawgmoth
12% of 32 decks +3% synergy
Oboro, Palace in the Clouds
9% of 32 decks +9% synergy
Thespian's Stage
9% of 32 decks +7% synergy
Temple of the False God
9% of 32 decks -0% synergy
Mystic Sanctuary
9% of 32 decks -2% synergy
Mana Artifacts
Sol Ring
94% of 32 decks +10% synergy
Basalt Monolith
78% of 32 decks +75% synergy
Mox Opal
69% of 32 decks +64% synergy
Arcane Signet
66% of 32 decks -7% synergy
Gilded Lotus
50% of 32 decks +47% synergy
Everflowing Chalice
47% of 32 decks +42% synergy
Thran Dynamo
41% of 32 decks +36% synergy
Mana Crypt
34% of 32 decks +29% synergy
Dimir Signet
30% of 10 decks +1% synergy
Talisman of Dominance
30% of 10 decks -2% synergy
Chromatic Orrery
28% of 32 decks +27% synergy
Liquimetal Torque
22% of 32 decks +19% synergy
Fellwar Stone
22% of 32 decks +1% synergy
Crystal Skull, Isu Spyglass
19% of 16 decks +17% synergy
Mox Diamond
19% of 32 decks +14% synergy
Thought Vessel
19% of 32 decks +2% synergy
Extraplanar Lens
16% of 32 decks +15% synergy
Mox Amber
16% of 32 decks +11% synergy
Caged Sun
12% of 32 decks +10% synergy
Worn Powerstone
12% of 32 decks +10% synergy
Chromatic Lantern
12% of 32 decks +3% synergy
Gemstone Array
9% of 32 decks +9% synergy
Gauntlet of Power
9% of 32 decks +9% synergy
Sky Diamond
9% of 32 decks +5% synergy
Lands
Hallowed Fountain
60% of 5 decks +20% synergy
Watery Grave
50% of 10 decks +10% synergy
Breeding Pool
50% of 6 decks +10% synergy
Command Tower
34% of 32 decks -40% synergy
Polluted Delta
31% of 32 decks +20% synergy
Mistvault Bridge
30% of 10 decks +26% synergy
Morphic Pool
30% of 10 decks +4% synergy
Drowned Catacomb
30% of 10 decks +3% synergy
Scalding Tarn
25% of 32 decks +14% synergy
Flooded Strand
25% of 32 decks +14% synergy
Urza's Cave
16% of 19 decks +13% synergy
The Mycosynth Gardens
16% of 32 decks +14% synergy
Bloodstained Mire
16% of 32 decks +5% synergy
Misty Rainforest
16% of 32 decks +4% synergy
Exotic Orchard
16% of 32 decks -20% synergy
Windswept Heath
12% of 32 decks +2% synergy
Spire of Industry
9% of 32 decks +6% synergy
Prismatic Vista
9% of 32 decks +4% synergy
Reflecting Pool
9% of 32 decks +4% synergy
Cavern of Souls
9% of 32 decks +2% synergy
Mana Confluence
9% of 32 decks +2% synergy
City of Brass
9% of 32 decks +2% synergy
Arid Mesa
9% of 32 decks -1% synergy
Wooded Foothills
9% of 32 decks -1% synergy
Marsh Flats
9% of 32 decks -2% synergy
Verdant Catacombs
9% of 32 decks -2% synergy