Heartstone + Basalt Monolith + Karn's Touch

Heartstone
Basalt Monolith
Karn's Touch

Requires
Heartstone must be on the battlefield. Basalt Monolith must be on the battlefield. Karn's Touch must be in hand. Basalt Monolith does not have summoning sickness. Mana needed:
Steps
  1. Cast Karn's Touch by paying , targeting Basalt Monolith.
  2. Activate Basalt Monolith's first ability by tapping it, adding .
  3. Activate Basalt's Monolith's last ability by paying 2, untapping it.
  4. Repeat.
Results
Infinite colorless mana.

Memnarch
0.14% of 1418 decks 2 decks
Urza, Lord High Artificer
0.03% of 11942 decks 3 decks
High Synergy Cards
Training Grounds
64% of 11 decks +62% synergy
Dramatic Reversal
64% of 11 decks +61% synergy
Rings of Brighthearth
55% of 11 decks +53% synergy
Dispel
55% of 11 decks +52% synergy
Isochron Scepter
55% of 11 decks +52% synergy
Trophy Mage
45% of 11 decks +45% synergy
Whir of Invention
45% of 11 decks +44% synergy
Thoughtcast
45% of 11 decks +44% synergy
Fabricate
45% of 11 decks +42% synergy
Rhystic Study
50% of 12 decks +36% synergy
Top Cards
Windfall
42% of 12 decks +35% synergy
Counterspell
42% of 12 decks +21% synergy
Pili-Pala
36% of 11 decks +36% synergy
Reshape
36% of 11 decks +36% synergy
Muddle the Mixture
36% of 11 decks +34% synergy
Liquimetal Torque
36% of 11 decks +33% synergy
Ponder
36% of 11 decks +30% synergy
Swan Song
36% of 11 decks +28% synergy
Power Artifact
33% of 12 decks +33% synergy
Thran Dynamo
33% of 12 decks +28% synergy
Creatures
Voltaic Construct
27% of 11 decks +27% synergy
Grand Architect
27% of 11 decks +27% synergy
Tribute Mage
27% of 11 decks +26% synergy
Spellskite
27% of 11 decks +26% synergy
Padeem, Consul of Innovation
27% of 11 decks +26% synergy
Sai, Master Thopterist
27% of 11 decks +25% synergy
Emry, Lurker of the Loch
27% of 11 decks +25% synergy
Karn, Silver Golem
25% of 12 decks +25% synergy
Ornithopter
25% of 12 decks +23% synergy
Instants
Mystical Tutor
33% of 12 decks +26% synergy
Brainstorm
33% of 12 decks +23% synergy
Force of Negation
27% of 11 decks +23% synergy
Fierce Guardianship
27% of 11 decks +19% synergy
Negate
27% of 11 decks +16% synergy
Sunder
25% of 12 decks +25% synergy
High Tide
25% of 12 decks +23% synergy
Sorceries
Rise and Shine
27% of 11 decks +27% synergy
Merchant Scroll
25% of 12 decks +24% synergy
Utility Artifacts
Forsaken Monument
27% of 11 decks +26% synergy
Howling Mine
25% of 12 decks +23% synergy
Enchantments
Mystic Remora
33% of 12 decks +25% synergy
Copy Artifact
25% of 12 decks +25% synergy
Propaganda
25% of 12 decks +20% synergy
Planeswalkers
Karn, the Great Creator
27% of 11 decks +26% synergy
Jace, Wielder of Mysteries
27% of 11 decks +25% synergy
Narset, Parter of Veils
27% of 11 decks +25% synergy
Utility Lands
Urza's Power Plant
33% of 12 decks +32% synergy
Urza's Tower
33% of 12 decks +32% synergy
Urza's Mine
33% of 12 decks +32% synergy
Inventors' Fair
27% of 11 decks +23% synergy
Mystic Sanctuary
27% of 11 decks +21% synergy
Urza's Saga
27% of 11 decks +20% synergy
Reliquary Tower
27% of 11 decks -2% synergy
Mana Artifacts
Sol Ring
92% of 12 decks +7% synergy
Arcane Signet
64% of 11 decks -8% synergy
Mana Vault
33% of 12 decks +27% synergy
Mana Crypt
33% of 12 decks +22% synergy
Mox Opal
27% of 11 decks +23% synergy
Everflowing Chalice
27% of 11 decks +22% synergy
Chrome Mox
27% of 11 decks +21% synergy
Thought Vessel
27% of 11 decks +11% synergy
Grim Monolith
25% of 12 decks +23% synergy
Worn Powerstone
25% of 12 decks +22% synergy
Mind Stone
25% of 12 decks +7% synergy
Fellwar Stone
25% of 12 decks +4% synergy
Lands
Command Tower
45% of 11 decks -28% synergy
Terramorphic Expanse
27% of 11 decks +12% synergy
Evolving Wilds
27% of 11 decks +6% synergy