Intruder Alarm + Overseer of the Damned + Visara the Dreadful

UB identity

Commander legal

The 3 combo pieces

What must be in place

Visara does not have summoning sickness.

How to execute it

  1. Activate Visara by tapping it, destroying any nontoken creature.
  2. The creature dies, triggering Overseer of the Damned, creating a tapped 2/2 Zombie creature token.
  3. The Zombie enters the battlefield, triggering Intruder Alarm, untapping all creatures.
  4. Repeat.
  5. You may also repeat this loop any time a creature enters the battlefield under an opponent control.

What the combo produces