Agent Frank Horrigan + Deadeye Navigator + Crystalline Crawler

Agent Frank Horrigan

Deadeye Navigator

Crystalline Crawler

How it works

1. Activate Agent Frank Horrigan by paying 1, 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 1.
6. Repeat.