Intruder Alarm + Satoru Umezawa

UB identity

Commander legal

The 2 combo pieces

What must be in place

Creatures you control can tap to produce at least {2}{U}{B}.

How to execute it

  1. Declare any other creature as an attacker.
  2. When that creature isn't blocked, activate any number of creatures you control by tapping them, adding at least {2}{U}{B}.
  3. Activate a creature card's ninjutsu ability by paying {2}{U}{B} and returning the unblocked attacker to your hand, putting the creature card from your hand onto the battlefield tapped and attacking.
  4. When the creature enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  5. Repeat from step 2.

What the combo produces