Intruder Alarm + Mm'menon, Uthros Exile + Xavier Sal, Infested Captain

UBRG identity

Commander legal

The 3 combo pieces

What must be in place

You control at least one artifact creature token.
Xavier Sal does not have summoning sickness.
There is a removable counter on a permanent you control.

How to execute it

  1. Activate Xavier Sal by tapping it and removing a counter from a permanent you control, creating a copy of an artifact creature token you control.
  2. When the creature token enters the battlefield, Intruder Alarm and Mm'menon trigger.
  3. Resolve the Intruder Alarm trigger, untapping all creatures.
  4. Resolve the Mm'menon trigger, putting a counter on it.
  5. Repeat.

What the combo produces