the front side of Prowling Geistcatcher
the back of a classic MtG card
the front side of Karmic Guide
the back of a classic MtG card
the front side of Altar of Dementia
the back of a classic MtG card

Color Identity: W, B

Initial Card State

  1.  All permanents on the battlefield.

Steps

  1. Activate Altar of Dementia by sacrificing Karmic Guide.
  2. When Karmic Guide dies, Prowling Geistcatcher's first ability triggers, exiling Karmic Guide from your graveyard.
  3. Activate Altar of Dementia by sacrificing Prowling Geistcatcher.
  4. When Prowling Geistcatcher dies, its second ability triggers, returning Karmic Guide from exile to the battlefield.
  5. When Karmic Guide enters the battlefield, it triggers, returning Prowling Geistcatcher from your graveyard to the battlefield.
  6. Resolve the Altar of Dementia abilities from step 1 and step 3, causing target player to mill cards equal to Karmic Guide and Prowling Geistcatcher's power.
  7. Repeat.

Results

  1. Infinite death triggers.
  2. Infinite ETB.
  3. Infinite LTB.
  4. Infinite mill.
  5. Infinite sacrifice triggers.
  6. Infinite self-mill.

Metadata

  1. In 107 decks according to EDHREC.
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