Agent Frank Horrigan, Deadeye Navigator, and Crystalline Crawler

Prerequisites

• Agent Frank Horrigan on the battlefield
• Deadeye Navigator on the battlefield
• Crystalline Crawler on the battlefield
• Deadeye Navigator is paired with Agent Frank Horrigan
• Crystalline Crawler has at least one +1/+1 counter on it
• available

Steps

1. Activate Agent Frank Horrigan by paying , blinking it
2. When Agent Frank Horrigan enters the battlefield, it and Deadeye Navigator's soulbond ability trigger
3. Resolve the Agent Frank Horrigan trigger, causing you to put two +1/+1 counters on Crystalline Crawler
4. Resolve the Deadeye Navigator trigger, repairing it and Agent Frank Horrigan
5. Activate Crystalline Crawler's first ability twice by removing two +1/+1 counters from it, adding
6. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite proliferate