Gravecrawler + Intruder Alarm + Soldevi Adnate

UB identity

Commander legal

The 3 combo pieces

What must be in place

Soldevi Adnate does not have summoning sickness.
You control at least one additional Zombie.

How to execute it

  1. Activate Soldevi Adnate by tapping it and sacrificing Gravecrawler, adding {B}.
  2. Cast Gravecrawler from your graveyard by paying {B}.
  3. Gravecrawler enters the battlefield, triggering Intruder Alarm, untapping all creatures.
  4. Repeat.

What the combo produces