Fain, the Broker + Thornbite Staff + Crystalline Crawler + Tenacious Dead

Fain, the Broker

Thornbite Staff

Crystalline Crawler

Tenacious Dead

How it works

1. Activate Fain's first ability by tapping it and sacrificing Tenacious Dead.
2. Tenacious Dead dies, triggering itself and Fain.
3. Resolve the Fain trigger, untapping it.
4. Resolve the Tenacious Dead trigger, causing you to pay 1 to return it from your graveyard to the battlefield tapped.
5. Resolve the Fain ability from step 1, putting two +1/+1 counters on Crystalline Crawler.
6. Activate Crystalline Crawler's first ability twice by removing two counters from it, adding .
7. Repeat.