Halo Fountain
Intruder Alarm
Karn, Silver Golem

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield.
Halo Fountain does not have summoning sickness. You control a creature that can tap to produce at least .
1 available

   Steps

How does this combo work?
1
Activate Karn by paying 1, causing Halo Fountain to become an artifact creature until end of turn.
2
Activate a creature you control by tapping it, adding .
3
Activate Halo Fountain's first ability by paying , tapping and untapping it, creating a 1/1 Citizen creature token.
4
When the Citizen enters the battlefield, Intruder Alarm triggers, untapping all creatures.
5
Repeat from step 2.

   Results

What do I get from this combo?
Infinite creature tokens
Infinite ETB
Infinite mana creatures you control can produce
Infinite untap of creatures
Shorikai, Genesis Engine
0.0%inclusion3 decks19.7K decks
Creatures
Etherium Sculptor
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85%synergy
Emry, Lurker of the Loch
67%inclusion2 decks3 decks
55%synergy
Foundry Inspector
67%inclusion2 decks3 decks
53%synergy
Illustrious Wanderglyph
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62%synergy
Voltaic Construct
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66%synergy
Kotori, Pilot Prodigy
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61%synergy
Cyberdrive Awakener
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58%synergy
Padeem, Consul of Innovation
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57%synergy
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45%synergy
Vedalken Engineer
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62%synergy
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60%synergy
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59%synergy
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64%synergy
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47%synergy
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47%synergy
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48%synergy
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48%synergy
Containment Construct
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32%synergy
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31%synergy
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32%synergy
Gold Myr
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Kelpie Guide
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31%synergy
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32%synergy
Palladium Myr
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30%synergy
Sai, Master Thopterist
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23%synergy
Silver Myr
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25%synergy
Solemn Simulacrum
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8%synergy
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30%synergy
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30%synergy
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31%synergy
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32%synergy
Grand Abolisher
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23%synergy
Mother of Runes
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30%synergy
Katsumasa, the Animator
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29%synergy
Rebbec, Architect of Ascension
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32%synergy
Kappa Cannoneer
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25%synergy
Phyrexian Metamorph
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24%synergy
Hotshot Mechanic
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32%synergy
Urza, Lord High Artificer
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27%synergy
Bronze Guardian
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28%synergy
Urza, Prince of Kroog
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30%synergy
Ethersworn Canonist
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31%synergy
Weathered Wayfarer
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31%synergy
Ocelot Pride
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32%synergy
Lita, Mechanical Engineer
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The Reality Chip
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Instants
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92%synergy
Swords to Plowshares
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Generous Gift
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35%synergy
Teferi's Protection
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Mystical Tutor
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53%synergy
Enlightened Tutor
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49%synergy
Dispatch
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54%synergy
An Offer You Can't Refuse
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Counterspell
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-21%synergy
Cryptic Command
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29%synergy
Path to Exile
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-20%synergy
Reality Shift
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25%synergy
Cyclonic Rift
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11%synergy
Dawn's Truce
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26%synergy
Desynchronization
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29%synergy
Whir of Invention
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28%synergy
Sorceries
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89%synergy
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82%synergy
Approach of the Second Sun
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18%synergy
Universal Surveillance
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32%synergy
Dance of the Manse
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27%synergy
Supreme Verdict
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5%synergy
Anchor to Reality
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31%synergy
Brilliant Restoration
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29%synergy
Ponder
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22%synergy
Thoughtcast
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24%synergy
Utility Artifacts
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94%synergy
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93%synergy
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66%synergy
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64%synergy
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59%synergy
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61%synergy
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64%synergy
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63%synergy
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61%synergy
Monument to Endurance
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48%synergy
Thopter Fabricator
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46%synergy
Manifold Key
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27%synergy
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32%synergy
Skullclamp
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25%synergy
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30%synergy
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33%synergy
Unidentified Hovership
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31%synergy
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27%synergy
Peacewalker Colossus
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28%synergy
Skysovereign, Consul Flagship
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28%synergy
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Mechtitan Core
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29%synergy
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28%synergy
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Enchantments
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32%synergy
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7%synergy
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33%synergy
Ensoul Artifact
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33%synergy
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31%synergy
Mechanized Production
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28%synergy
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31%synergy
Tempered Steel
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Planeswalkers
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62%synergy
Teferi, Hero of Dominaria
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30%synergy
Venser, the Sojourner
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30%synergy
Utility Lands
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61%synergy
Academy Ruins
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55%synergy
Ancient Den
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52%synergy
Inventors' Fair
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58%synergy
Archway of Innovation
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59%synergy
Minamo, School at Water's Edge
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59%synergy
Reliquary Tower
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18%synergy
Celestial Colonnade
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29%synergy
Nykthos, Shrine to Nyx
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32%synergy
Ancient Tomb
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26%synergy
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22%synergy
Fomori Vault
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31%synergy
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Strip Mine
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31%synergy
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29%synergy
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26%synergy
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23%synergy
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33%synergy
Seat of the Synod
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18%synergy
War Room
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32%synergy
Mana Artifacts
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16%synergy
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42%synergy
Sol Ring
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13%synergy
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38%synergy
Basalt Monolith
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29%synergy
Gilded Lotus
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28%synergy
Mana Vault
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27%synergy
The Mightstone and Weakstone
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29%synergy
Mox Diamond
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30%synergy
Mox Opal
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27%synergy
Sonic Screwdriver
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31%synergy
Fabrication Foundry
33%inclusion1 decks3 decks
32%synergy
Grim Monolith
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31%synergy
Thought Vessel
33%inclusion1 decks3 decks
-9%synergy
Lands
Command Tower
100%inclusion3 decks3 decks
14%synergy
Sea of Clouds
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60%synergy
Deserted Beach
67%inclusion2 decks3 decks
27%synergy
Glacial Fortress
67%inclusion2 decks3 decks
5%synergy
Hallowed Fountain
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20%synergy
Prairie Stream
67%inclusion2 decks3 decks
1%synergy
Spire of Industry
67%inclusion2 decks3 decks
58%synergy
Exotic Orchard
33%inclusion1 decks3 decks
6%synergy
Hengegate Pathway
33%inclusion1 decks3 decks
13%synergy
Port Town
33%inclusion1 decks3 decks
-14%synergy
Skycloud Expanse
33%inclusion1 decks3 decks
-2%synergy
Temple of Enlightenment
33%inclusion1 decks3 decks
-5%synergy
The Mycosynth Gardens
33%inclusion1 decks3 decks
30%synergy
Tundra
33%inclusion1 decks3 decks
21%synergy
Gemstone Caverns
33%inclusion1 decks3 decks
29%synergy
Cavern of Souls
33%inclusion1 decks3 decks
30%synergy
Flooded Strand
33%inclusion1 decks3 decks
1%synergy
Adarkar Wastes
33%inclusion1 decks3 decks
-10%synergy
Mystic Gate
33%inclusion1 decks3 decks
10%synergy
Nimbus Maze
33%inclusion1 decks3 decks
11%synergy