Intruder Alarm + Skirsdag High Priest

UB identity

Commander legal

The 2 combo pieces

What must be in place

Skirsdag High Priest does not have summoning sickness.
You control at least two other untapped creatures.
A creature has died this turn.

How to execute it

  1. Activate Skirsdag High Priest by tapping it and two other creatures you control, creating a 5/5 Demon creature token.
  2. The Demon enters the battlefield, triggering Intruder Alarm, untapping all creatures.
  3. Repeat.

What the combo produces