Urza, Lord High Artificer, Deadeye Navigator, and Genesis Chamber

Prerequisites

• Urza, Lord High Artificer on the battlefield
• Deadeye Navigator on the battlefield
• Genesis Chamber on the battlefield
• Deadeye Navigator is paired with Urza
• available

Steps

1. Activate Urza by paying , blinking it
2. When Urza enters the battlefield, it, Deadeye Navigator's soulbond ability and Genesis Chamber trigger
3. Resolve the Urza trigger, creating a 0/0 Construct artifact creature token
4. Resolve the Genesis Chamber trigger, creating a 1/1 Myr artifact creature token
5. Resolve the Deadeye Navigator trigger, repairing it and Urza
6. Activate Urza's first ability twice by tapping the Myr and Construct, adding
7. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite tapped creature tokens