Intruder Alarm + Shrieking Drake

U identity

Commander legal

The 2 combo pieces

What must be in place

Creatures you control can tap to produce at least {U}.

How to execute it

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

What the combo produces