How can you create a combo with March of the Machines, Intruder Alarm, Undercity Scrounger?
user
[START OF COMBO]This combo can be formed with March of the Machines, Intruder Alarm, Undercity Scrounger

Color identity: UB
Mana cost: 
Steps:
  1. Activate Undercity Scrounger by tapping it, creating a Treasure token.
  2. The Treasure token enters the battlefield as a 0/0 artifact creature, and therefore dies as a state-based action due to having zero toughness.
  3. Intruder Alarm triggers, untapping all creatures.
  4. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves 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
  - Undercity Scrounger does not have summoning sickness.
  - A creature has died this turn.
[END OF COMBO PREREQUISITES]
assistant