How can you create a combo with Mortuary, Narcomoeba, Undercity Informer, Mana Echoes?
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[START OF COMBO]This combo can be formed with Mortuary, Narcomoeba, Undercity Informer, Mana Echoes

Color identity: UBR
Mana cost: {1}
Steps:
  1. Activate Undercity Informer by paying {1} and sacrificing Narcomoeba.
  2. When Narcomoeba dies, Mortuary triggers, putting Narcomoeba on top of your library from your graveyard.
  3. Resolve the Undercity Informer ability, causing you to put Narcomoeba into your graveyard from the top of your library.
  4. Narcomoeba triggers, returning itself to the battlefield from your graveyard.
  5. When Narcomoeba enters the battlefield, Mana Echoes triggers, adding at least {C}.
  6. Repeat.
  7. If you control at least one other Illusion, this combo will net infinite colorless mana.[END OF COMBO STEPS]

Result:
  - Infinite colorless mana
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers
  - Infinite self-mill[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
[END OF COMBO PREREQUISITES]
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