the front side of Intruder Alarm
the back of a classic MtG card
the front side of Stonybrook Schoolmaster
the back of a classic MtG card
the front side of Drowner of Secrets
the back of a classic MtG card

Color Identity: W, U

Initial Card State

  1.  All permanents on the battlefield.

Steps

  1. Activate Drowner of Secrets by tapping Stonybrook Schoolmaster.
  2. Stonybrook Schoolmaster triggers, creating a 1/1 Merfolk Wizard creature token.
  3. When the Merfolk Wizard enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  4. Resolve the Drowner of Secrets ability, causing a player to mill a card.
  5. Repeat.

Results

  1. Infinite ETB.
  2. Infinite mill.
  3. Infinite self-mill.
  4. Infinite creature tokens.
  5. Infinite mana creatures you control can produce.
  6. Infinite untap of all creatures.

Metadata

  1. In 150 decks according to EDHREC.
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