Karn, Silver Golem, Myr Turbine, and Intruder Alarm

Prerequisites

• Karn, Silver Golem on the battlefield
• Myr Turbine on the battlefield
• Intruder Alarm on the battlefield
• Myr Turbine does not have summoning sickness
• available

Steps

1. Activate Karn, targeting Myr Turbine
2. Activate Myr Turbine, creating a Myr creature token
3. Intruder alarm triggers, untapping all creatures
4. Repeat

Results

• Infinite creature tokens
• Infinite ETB
• Infinite untap