Color Identity: U, B

Prerequisites

  1.  
    Fatestitcher
    Fatestitcher
    in your graveyard.
  2.  
    Void Maw
    Void Maw
    and
    Carrion Feeder
    Carrion Feeder
    on the battlefield.
  3. You control a permanent that can tap to produce at least ({U} magic symbol)  .

Steps

  1. Activate the mana-producing permanent by tapping it, adding ({U} magic symbol)  .
  2. Activate
    Fatestitcher
    Fatestitcher
    's unearth ability by paying ({U} magic symbol)  , returning it from your graveyard to the battlefield and giving it haste until end of turn.
  3. Activate
    Fatestitcher
    Fatestitcher
    by tapping it, untapping the mana-producing permanent.
  4. Activate
    Carrion Feeder
    Carrion Feeder
    by sacrificing
    Fatestitcher
    Fatestitcher
    .
  5. Choose to exile
    Fatestitcher
    Fatestitcher
    using
    Void Maw
    Void Maw
    's replacement effect instead of
    Fatestitcher
    Fatestitcher
    's.
  6. Resolve the
    Carrion Feeder
    Carrion Feeder
    ability, putting a +1/+1 counter on it.
  7. Activate
    Void Maw
    Void Maw
    by putting
    Fatestitcher
    Fatestitcher
    from exile into your graveyard, giving
    Void Maw
    Void Maw
    +2/+2 until end of turn.
  8. Repeat.

Results

  1. Infinite +1/+1 counters on
    Carrion Feeder
    Carrion Feeder
    .
  2. Infinite death triggers.
  3. Infinite ETB.
  4. Infinite LTB.
  5. Infinitely large
    Void Maw
    Void Maw
    until end of turn.
  6. Infinite sacrifice triggers.

Metadata

  1. In 4 decks according to EDHREC.
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