How can you create a combo with Mikaeus, the Unhallowed, Cauldron of Souls, Intruder Alarm, Animate Artifact, Carrion Feeder?
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[START OF COMBO]This combo can be formed with Mikaeus, the Unhallowed, Cauldron of Souls, Intruder Alarm, Animate Artifact, Carrion Feeder

Color identity: UB
Mana cost: 
Steps:
  1. Activate Carrion Feeder by sacrificing itself.
  2. When Carrion Feeder dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  3. When Carrion Feeder enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  4. Resolve the Carrion Feeder ability, doing nothing.
  5. Activate Cauldron of Souls by tapping it, giving the creature persist until end of turn.
  6. Activate Carrion Feeder by sacrificing itself.
  7. When Carrion Feeder dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  8. When Carrion Feeder enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  9. Resolve the Carrion Feeder ability, doing nothing.
  10. Repeat.
  11. If you control an additional nontoken, non-Human creature, you may instead sacrifice it to get infinite +1/+1 counters on Carrion Feeder.[END OF COMBO STEPS]

Result:
  - Infinite +1/+1 counters on Carrion Feeder
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite mana creatures you control can produce
  - Infinite sacrifice triggers
  - Infinite untap of all creatures[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Animate Artifact attached to Cauldron of Souls.
  - Cauldron of Souls does not have summoning sickness.
[END OF COMBO PREREQUISITES]
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