Fain, the Broker + Thornbite Staff + Crystalline Crawler + Bloodsoaked Champion

Fain, the Broker

Thornbite Staff

Crystalline Crawler

Bloodsoaked Champion

How it works

1. Activate Fain's first ability by tapping it and sacrificing Bloodsoaked Champion.
2. Bloodsoaked Champion dies, triggering Fain, untapping Fain.
3. Resolve the Fain ability from step 1, putting two +1/+1 counters on Crystalline Crawler.
4. Activate Crystalline Crawler's first ability twice by removing two counters from it, adding .
5. Activate Bloodsoaked Champion by paying 1, returning it from your graveyard to the battlefield tapped.
6. Repeat.