How can you create a combo with Narfi, Betrayer King, Rimefeather Owl, Soldevi Adnate, Intruder Alarm?
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[START OF COMBO]This combo can be formed with Narfi, Betrayer King, Rimefeather Owl, Soldevi Adnate, Intruder Alarm

Color identity: UB
Mana cost: {1}{U}
Steps:
  1. Activate Rimefeather Owl by paying {1}{U}, putting an ice counter on Soldevi Adnate and causing it to become snow.
  2. Activate Soldevi Adnate by tapping it and sacrificing Narfi, adding {B}{B}{B}{B}{B}.
  3.  Activate Narfi by paying {S}{S}{S}, returning it from your graveyard to the battlefield.
  4. When Narfi enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  5. Repeat from step 2.[END OF COMBO STEPS]

Result:
  - Infinite black mana
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite mana creatures you control can produce
  - Infinite sacrifice triggers
  - Infinite snow mana
  - Infinite untap of all creatures[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Soldevi Adnate does not have summoning sickness.
[END OF COMBO PREREQUISITES]
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