Preston, the Vanisher + Ashnod's Altar + Faceless Butcher + Chord of Calling

Preston, the Vanisher

Ashnod's Altar

Faceless Butcher

Chord of Calling

How it works

1. Cast Chord of Calling by paying at most 4, searching your library for Faceless Butcher and putting it onto the battlefield.
2. When Faceless Butcher enters, it and Preston trigger.
3. Resolve the Faceless Butcher trigger, exiling another creature if needed.
4. Resolve the Preston trigger, creating a token copy of Faceless Butcher that is a 0/1 Illusion.
5. When the Faceless Butcher token enters, it triggers, exiling the nontoken Faceless Butcher.
6. Activate Ashnod's Altar by sacrificing the Faceless Butcher token
7. When the Faceless Butcher token dies, it triggers, returning Faceless Butcher from exile to the battlefield.
8. Repeat from step 2.