How can you create a combo with Intruder Alarm, Maskwood Nexus, Karn, the Great Creator?
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[START OF COMBO]This combo can be formed with Intruder Alarm, Maskwood Nexus, Karn, the Great Creator

Color identity: U
Mana cost: 
Steps:
  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.[END OF COMBO STEPS]

Result:
  - Infinite creature tokens
  - Infinite enters the battlefield
  - Infinite mana creatures you control can produce
  - Infinite untap of all creatures[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Creatures you control can tap to produce at least {3}.
[END OF COMBO PREREQUISITES]
assistant