the front side of The Twelfth Doctor
the back of a classic MtG card
the front side of Increasing Vengeance
the back of a classic MtG card

Color Identity: U, R

Initial Card State

  1.  The Twelfth Doctor on the battlefield.
  2.  Increasing Vengeance in your graveyard.

Easy Prerequisites

  1. You have not cast an instant or sorcery spell from anywhere except your hand this turn.

Notable Prerequisites

  1. You have an instant or sorcery card in hand.

Mana Needed

  1. ({3} magic symbol)  ({R} magic symbol)  ({R} magic symbol)   plus enough mana to cast the instant or sorcery in your hand available.

Steps

  1. Cast the instant or sorcery spell from your hand by paying its mana cost.
  2. Holding priority, cast Increasing Vengeance from your graveyard for its flashback cost by paying ({3} magic symbol)  ({R} magic symbol)  ({R} magic symbol)  , targeting the instant or sorcery.
  3. Increasing Vengeance's demonstrate ability triggers, causing you and an opponent to copy Increasing Vengeance, with your copy targeting the original Increasing Vengeance.
  4. The Twelfth Doctor triggers, putting a +1/+1 counter on it.
  5. Resolve the copy of Increasing Vengeance, copying Increasing Vengeance, with the copy targeting the original Increasing Vengeance.
  6. Repeat from step 4.

Results

  1. Infinite magecraft triggers.
  2. Infinite +1/+1 counters on a creature.

Metadata

  1. In 492 decks according to EDHREC.
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