Ghoulcaller Gisa + Intruder Alarm

UB identity

Commander legal

The 2 combo pieces

What must be in place

Gisa does not have summoning sickness.
You control a creature that can tap to produce at least {B}.
You control at least one additional creature.

How to execute it

  1. Activate a creature you control by tapping it, adding {B}.
  2. Activate Ghoulcaller Giser by paying {B}, sacrificing a creature and tapping it, creating at least one 2/2 Zombie creature token.
  3. The Zombie token(s) enter the battlefield, triggering Intruder Alarm that many times, untapping all creatures.
  4. Repeat.

What the combo produces