Intruder Alarm
Maskwood Nexus
Karn, the Great Creator

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield.
Creatures you control can tap to produce at least 3.

   Steps

How does this combo work?
1
Activate Karn's first loyalty ability by putting a loyalty counter on it, causing Maskwood Nexus to become a 4/4 artifact creature until end of turn.
2
Activate any number of mana-producing creatures you control by tapping them, adding at least 3.
3
Activate Maskwood Nexus by paying 3 and tapping it, creating a 2/2 Shapeshifter creature token.
4
When the Shapeshifter enters the battlefield, Intruder Alarm triggers, untapping all creatures.
5
Repeat from step 2.
6
If creatures you control can tap to produce at least 4, this combo nets infinite mana.

   Results

What do I get from this combo?
Infinite creature tokens
Infinite ETB
Infinite mana creatures you control can produce
Infinite untap of creatures
Infinite untap of creatures you control
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High Synergy Cards
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Planeswalkers
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Mana Artifacts
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Lotus Petal
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Liquimetal Torque
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Gilded Lotus
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Commander's Sphere
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Lands
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2%synergy
The World Tree
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46%synergy
Exotic Orchard
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3%synergy
Watery Grave
39%inclusion7 decks18 decks
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Steam Vents
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-2%synergy
Hallowed Fountain
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Temple Garden
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-4%synergy
Stomping Ground
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-6%synergy
Razortide Bridge
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25%synergy
Shivan Reef
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2%synergy
Sacred Foundry
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-6%synergy
Breeding Pool
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-12%synergy
Slagwoods Bridge
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27%synergy
Karplusan Forest
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9%synergy
Overgrown Tomb
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-15%synergy
Goldmire Bridge
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21%synergy
Rustvale Bridge
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19%synergy
Raugrin Triome
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1%synergy
Yavimaya Coast
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-2%synergy
Caves of Koilos
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Godless Shrine
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-16%synergy
Thornglint Bridge
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22%synergy
Ketria Triome
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-6%synergy
Path of Ancestry
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1%synergy
Mistvault Bridge
22%inclusion4 decks18 decks
18%synergy
Underground River
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0%synergy
Silverbluff Bridge
21%inclusion4 decks19 decks
15%synergy
Adarkar Wastes
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-3%synergy
Darkmoss Bridge
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17%synergy
Drossforge Bridge
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17%synergy
Polluted Delta
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8%synergy
Xander's Lounge
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Llanowar Wastes
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-7%synergy
Indatha Triome
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-7%synergy
Blood Crypt
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-18%synergy
Raffine's Tower
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-5%synergy
Battlefield Forge
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-10%synergy
Brushland
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-2%synergy
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-9%synergy
Frontier Bivouac
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-11%synergy
Flooded Strand
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Misty Rainforest
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Volcanic Island
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Tanglepool Bridge
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10%synergy
Reflecting Pool
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8%synergy
Cavern of Souls
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6%synergy