Animation Module + Intruder Alarm + Cathars' Crusade

Animation Module
Intruder Alarm
Cathars' Crusade

Requires
Animation Module must be on the battlefield. Intruder Alarm must be on the battlefield. Cathars' Crusade must be on the battlefield. Creatures you control can tap to produce at least 1. You have a way to cause a creature to enter the battlefield without a -1/-1 counter on it.
Steps
  1. Cause a creature to enter the battlefield.
  2. When the creature enters the battlefield, Intruder Alarm and Cathars' Crusade trigger.
  3. Resolve the Intruder Alarm trigger, untapping all creatures.
  4. Holding priority, activate a mana-producing creature by tapping it, adding at least 1.
  5. Resolve the Cathars' Crusade trigger, putting a +1/+1 counter on each creature you control.
  6. Animation Module triggers for each counter placed.
  7. Resolve all but the last trigger, choosing not to pay.
  8. Resolve the final trigger, causing you to pay 1 to create a 1/1 Servo artifact creature token.
  9. Repeat from step 2.
Results
Infinite creature tokens. Infinite ETB. Infinite mana creatures you control can produce. Infinite untap of all creatures. Infinite +1/+1 counters.

Cayth, Famed Mechanist
0.29% of 1381 decks 4 decks
Urtet, Remnant of Memnarch
0.01% of 14368 decks 1 decks
Optimus Prime, Hero
0.03% of 3404 decks 1 decks
Derevi, Empyrial Tactician
0.01% of 7484 decks 1 decks
Dr. Madison Li
0.02% of 4052 decks 1 decks
Falco Spara, Pactweaver
0.02% of 4615 decks 1 decks
Zinnia, Valley's Voice
0.02% of 6413 decks 1 decks
Gnostro, Voice of the Crags
0.18% of 549 decks 1 decks
High Synergy Cards
Anim Pakal, Thousandth Moon
71% of 7 decks +63% synergy
Ashnod's Altar
64% of 11 decks +56% synergy
Impact Tremors
56% of 9 decks +46% synergy
Steel Overseer
45% of 11 decks +44% synergy
Etherium Sculptor
45% of 11 decks +40% synergy
Thought Monitor
36% of 11 decks +33% synergy
Urza, Lord High Artificer
36% of 11 decks +33% synergy
Panharmonicon
36% of 11 decks +32% synergy
Academy Ruins
36% of 11 decks +32% synergy
Intangible Virtue
36% of 11 decks +31% synergy
Top Cards
Swords to Plowshares
55% of 11 decks -8% synergy
Path to Exile
45% of 11 decks -0% synergy
Enlightened Tutor
36% of 11 decks +19% synergy
Arcane Denial
36% of 11 decks +17% synergy
Creatures
Guide of Souls
50% of 6 decks +46% synergy
Ingenious Artillerist
38% of 8 decks +35% synergy
Witty Roastmaster
38% of 8 decks +34% synergy
Urza, Prince of Kroog
33% of 9 decks +30% synergy
Enthusiastic Mechanaut
33% of 9 decks +29% synergy
Lae'zel, Vlaakith's Champion
30% of 10 decks +27% synergy
Palladium Myr
27% of 11 decks +25% synergy
Myr Battlesphere
27% of 11 decks +25% synergy
Esper Sentinel
27% of 11 decks +7% synergy
Instants
Akroma's Will
27% of 11 decks +18% synergy
Negate
27% of 11 decks +4% synergy
Counterspell
27% of 11 decks -16% synergy
Sorceries
Hour of Reckoning
27% of 11 decks +23% synergy
Fabricate
27% of 11 decks +21% synergy
Utility Artifacts
Thousand Moons Smithy
38% of 8 decks +34% synergy
Decoction Module
27% of 11 decks +27% synergy
Unwinding Clock
27% of 11 decks +25% synergy
Skullclamp
27% of 11 decks +15% synergy
Lightning Greaves
27% of 11 decks +2% synergy
Enchantments
Warleader's Call
43% of 7 decks +32% synergy
Storm the Vault
33% of 9 decks +30% synergy
Goblin Bombardment
33% of 9 decks +27% synergy
Utility Lands
Archway of Innovation
60% of 5 decks +55% synergy
Buried Ruin
36% of 11 decks +31% synergy
Inventors' Fair
27% of 11 decks +23% synergy
Rogue's Passage
27% of 11 decks +8% synergy
Reliquary Tower
27% of 11 decks -2% synergy
Mana Artifacts
Sol Ring
100% of 11 decks +16% synergy
Arcane Signet
91% of 11 decks +19% synergy
Talisman of Conviction
44% of 9 decks +22% synergy
Talisman of Creativity
44% of 9 decks +16% synergy
Talisman of Progress
36% of 11 decks +14% synergy
Azorius Signet
36% of 11 decks +10% synergy
Boros Signet
33% of 9 decks +10% synergy
Izzet Signet
33% of 9 decks +5% synergy
Lands
Command Tower
82% of 11 decks +8% synergy
Mystic Monastery
56% of 9 decks +29% synergy
Exotic Orchard
45% of 11 decks +10% synergy
Hallowed Fountain
45% of 11 decks +5% synergy
Raugrin Triome
44% of 9 decks +18% synergy
Sulfur Falls
44% of 9 decks +14% synergy
Sea of Clouds
36% of 11 decks +10% synergy
Sundown Pass
33% of 9 decks +18% synergy
Spectator Seating
33% of 9 decks +8% synergy
Training Center
33% of 9 decks +6% synergy
Clifftop Retreat
33% of 9 decks +5% synergy
Sacred Foundry
33% of 9 decks -3% synergy
Steam Vents
33% of 9 decks -6% synergy
Spire of Industry
27% of 11 decks +24% synergy
Glacial Fortress
27% of 11 decks +2% synergy