Intruder Alarm, and Godsire

Prerequisites

• Intruder Alarm on the battlefield
• Godsire on the battlefield
• Godsire does not have summoning sickness

Steps

1. Tap Godsire to create an 8/8 beast token
2. When the token ETBs, Intruder Alarm triggers, untapping all creatures
3. Repeat for infinite tokens

Results

• Infinite creature tokens
• Infinite ETB