Preston, the Vanisher + Phyrexian Altar + Faceless Butcher + Nature's Rhythm

Preston, the Vanisher

Phyrexian Altar

Faceless Butcher

Nature's Rhythm

How it works

1. Cast Nature's Rhythm 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 Phyrexian 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.