the front side of Cauldron of Souls
the back of a classic MtG card
the front side of Corridor Monitor
the back of a classic MtG card
the front side of Cathars' Crusade
the back of a classic MtG card
the front side of Phyrexian Altar
the back of a classic MtG card

Color Identity: W, U

Initial Card State

  1.  All permanents on the battlefield.

Notable Prerequisites

  1. Corridor Monitor does not have a -1/-1 counter on it.

Steps

  1. Activate Cauldron of Souls by tapping it, giving Corridor Monitor persist until end of turn.
  2. Activate Phyrexian Altar by sacrificing Corridor Monitor, adding one mana of any color.
  3. When Corridor Monitor dies, its persist ability triggers, returning itself from your graveyard to the battlefield with a -1/-1 counter on it.
  4. When Corridor Monitor enters the battlefield, it and Cathars' Crusade trigger.
  5. Resolve the Corridor Monitor trigger, untapping Cauldron of Souls.
  6. Resolve the Cathars' Crusade trigger, putting a +1/+1 counter on each creature you control.
  7. Repeat.

Results

  1. Infinite colored mana.
  2. Infinite death triggers.
  3. Infinite ETB.
  4. Infinite LTB.
  5. Infinite sacrifice triggers.
  6. Infinite +1/+1 counters.

Metadata

  1. In 2 decks according to EDHREC.
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