the front side of Cauldron of Souls
the back of a classic MtG card
the front side of Dross Scorpion
the back of a classic MtG card
the front side of Extruder
the back of a classic MtG card

Color Identity: C

Initial Card State

  1.  All permanents on the battlefield.

Notable Prerequisites

  1. You control another artifact creature with base toughness 2 or greater.
  2. Extruder does not have a -1/-1 counter on it.

Steps

  1. Activate Cauldron of Souls by tapping it, giving Extruder and the other artifact creature with base toughness 2 or greater persist until end of turn.
  2. Activate Extruder by sacrificing it, targeting the other artifact creature.
  3. When Extruder dies, its persist ability and Dross Scorpion trigger.
  4. Resolve the Dross Scorpion trigger, untapping Cauldron of Souls.
  5. Resolve the Extruder trigger, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  6. Resolve the Extruder ability from step 2, putting a +1/+1 on the targeted creature.
  7. Activate Extruder by sacrificing the other artifact creature, targeting Extruder.
  8. When the creature dies, its persist ability and Dross Scorpion triggers.
  9. Resolve the Dross Scorpion trigger, untapping any artifact you control.
  10. Resolve the persist trigger, returning the creature from your graveyard to the battlefield with a -1/-1 counter on it.
  11. Resolve the Extruder ability, putting a +1/+1 counter on it.
  12. Repeat.

Results

  1. Infinite LTB.
  2. Infinite ETB.
  3. Infinite sacrifice triggers.
  4. Infinite death triggers.
  5. Infinite mana artifacts you control can produce.
  6. Infinite untap of artifacts you control.

Metadata

  1. In 17 decks according to EDHREC.
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