Color Identity: U, B, R

Prerequisites

  1.  
    Mairsil, the Pretender
    Mairsil
    on the battlefield.
  2.  All other permanents in exile.
  3. Mairsil, the Pretender
    Mairsil
    does not have summoning sickness.
  4. ({4} magic symbol)  ({U} magic symbol)   each turn available.

Steps

  1. Activate
    Mairsil, the Pretender
    Mairsil
    using
    Ventifact Bottle
    Ventifact Bottle
    's ability by paying ({4} magic symbol)   and tapping it, putting three +1/+1 counters on
    Mairsil, the Pretender
    Mairsil
    .
  2. Activate
    Mairsil, the Pretender
    Mairsil
    using
    Horseshoe Crab
    Horseshoe Crab
    's ability by paying ({U} magic symbol)  , untapping itself.
  3. Activate
    Mairsil, the Pretender
    Mairsil
    using
    Magistrate's Scepter
    Magistrate's Scepter
    's last ability by tapping it, gaining an extra turn after this one.
  4. Move to your next turn.
  5. Repeat.

Results

  1. Infinite turns.

Metadata

  1. In 20 decks according to EDHREC.
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