Supply Runners + Crystalline Crawler + Workhorse + Deadeye Navigator

Supply Runners

Crystalline Crawler

Workhorse

Deadeye Navigator

How it works

1. Activate Supply Runners by paying 1, blinking itself.
2. When Supply Runners enters the battlefield, it and Deadeye Navigator's soulbond ability trigger.
3. Resolve the Deadeye Navigator trigger, repairing it and Supply Runners.
4. Resolve the Supply Runners trigger, putting a +1/+1 counter on each other creature you control.
5. Activate Crystalline Crawler's first ability by removing a +1/+1 counter from it, adding .
6. Activate Workhorse by removing a +1/+1 counter from it, adding C.
7. Repeat.