Dualcaster Mage + Carrion Feeder + Unearth

Dualcaster Mage

Carrion Feeder

Unearth

How it works

1. Cast Unearth by paying , targeting any applicable target.
2. Holding priority, cast Dualcaster Mage by paying 1.
3. When Dualcaster Mage enters, it triggers, targeting Unearth.
4. Holding priority, activate Carrion Feeder by sacrificing Dualcaster Mage.
5. Resolve the Dualcaster Mage trigger, copying Unearth, with the copy targeting Dualcaster Mage.
6. Resolve the Unearth copy, returning Dualcaster Mage from your graveyard to the battlefield.
7. Repeat from step 3.

This clever recursion loop relies on Dualcaster Mage copying Unearth over and over, continually pulling the wizard back from the graveyard after Carrion Feeder sacrifices it. Because Carrion Feeder's sacrifice ability is instant-speed and doesn't cost mana, you can feed the Mage to it right in response to the Mage's own ETB trigger targeting Unearth. Each iteration neatly recycles the exact same resources while growing Carrion Feeder infinitely large through a relentless cascade of sacrifices and creature returns.