How can you create a combo with Xavier Sal, Infested Captain, Saproling Burst, Intruder Alarm?
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[START OF COMBO]This combo can be formed with Xavier Sal, Infested Captain, Saproling Burst, Intruder Alarm

Color identity: BGU
Mana cost: 
Steps:
  1. Activate Saproling Burst by removing a fade counter from it, creating a */* Saproling creature token.
  2. When the Saproling enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  3. Activate Xavier Sal's second ability by tapping it and sacrificing the Saproling, putting a fade counter on Saproling Burst.
  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 proliferate
  - Infinite sacrifice triggers
  - Infinite untap of all creatures[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Xavier Sal does not have summoning sickness.
  - Saproling Burst has at least two fade counters on it.
[END OF COMBO PREREQUISITES]
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