Gravecrawler + Illuminor Szeras + Intruder Alarm

UB identity

Commander legal

The 3 combo pieces

• Gravecrawler
• Illuminor Szeras
• Intruder Alarm

What must be in place

You control at least one additional Zombie.
Illuminor Szeras does not have summoning sickness.

How to execute it

1. Activate Illuminor Szeras 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

• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite mana creatures you control can produce
• Infinite sacrifice triggers
• Infinite storm count
• Infinite untap of creatures