Preston, the Vanisher + Karmic Guide + Ephemerate + Ashnod's Altar

Preston, the Vanisher

Karmic Guide

Ephemerate

Ashnod's Altar

How it works

1. Cast Ephemerate by paying , blinking Karmic Guide.
2. Karmic Guide enters the battlefield, triggering itself and Preston.
3. Resolve the Karmic Guide trigger, returning any creature card from your graveyard to the battlefield.
4. Activate Ashnod's Altar by sacrificing Karmic Guide, adding CC.
5. Resolve the Preston trigger from step 2, creating a token copy of Karmic Guide that is a 0/1 white Illusion.
6. The Karmic Guide token enters the battlefield, returning the nontoken Karmic Guide from your graveyard to the battlefield.
7. Repeat from step 2.