Encroaching Mycosynth + Fain, the Broker + Intruder Alarm

UB identity

Commander legal

The 3 combo pieces

• Encroaching Mycosynth
• Fain, the Broker
• Intruder Alarm

What must be in place

Fain does not have summoning sickness.
You control at least one additional permanent.

How to execute it

1. Activate Fain's third ability by tapping it and sacrificing an artifact, creating a 2/1 Inkling creature token that is an artifact due to Encroaching Mycosynth.
2. When the Inkling enters the battlefield, Intruder Alarm triggers, untapping all creatures.
3. Repeat.

What the combo produces

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