the front side of Intruder Alarm
the back of a classic MtG card
the front side of Whitemane Lion
the back of a classic MtG card

Color Identity: W, U

Initial Card State

  1.  Whitemane Lion in hand.
  2.  Intruder Alarm on the battlefield.

Notable Prerequisites

  1. Creatures you control can tap to produce at least ({1} magic symbol)  ({W} magic symbol)  .

Steps

  1. Activate all mana-producing creatures you control by tapping them, adding at least ({1} magic symbol)  ({W} magic symbol)  .
  2. Cast Whitemane Lion by paying ({1} magic symbol)  ({W} magic symbol)  .
  3. Whitemane Lion enters the battlefield, triggering Intruder Alarm and Whitemane Lion.
  4. Resolve the Intruder Alarm's trigger, untapping all creatures you control.
  5. Resolve the Whitemane Lion's trigger, returning it to your hand.
  6. Repeat.

Results

  1. Infinite ETB.
  2. Infinite LTB.
  3. Infinite mana creatures you control can produce.
  4. Infinite storm count.
  5. Infinite untap of all creatures.

Metadata

  1. In 2507 decks according to EDHREC.
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