the front side of Halo Fountain
the back of a classic MtG card
the front side of Intruder Alarm
the back of a classic MtG card
the front side of Karn, Silver Golem
the back of a classic MtG card

Color Identity: W, U

Initial Card State

  1.  All permanents on the battlefield.

Notable Prerequisites

  1. Halo Fountain does not have summoning sickness.
  2. You control a creature that can tap to produce at least ({W} magic symbol)  .

Mana Needed

  1. ({1} magic symbol)   available.

Steps

  1. Activate Karn by paying ({1} magic symbol)  , causing Halo Fountain to become an artifact creature until end of turn.
  2. Activate a creature you control by tapping it, adding ({W} magic symbol)  .
  3. Activate Halo Fountain's first ability by paying ({W} magic symbol)  , tapping and untapping it, creating a 1/1 Citizen creature token.
  4. When the Citizen enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  5. Repeat from step 2.

Results

  1. Infinite creature tokens.
  2. Infinite ETB.
  3. Infinite mana creatures you control can produce.
  4. Infinite untap of all creatures.

Metadata

  1. In 4 decks according to EDHREC.
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