Phyrexian Altar + Dualcaster Mage + Unearth

Phyrexian Altar

Dualcaster Mage

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 Phyrexian Altar 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 loop harnesses Dualcaster Mage to perpetually recur itself using the graveyard-retrieval magic of Unearth. When Dualcaster Mage enters the battlefield, its triggered ability targets the Unearth currently on the stack, creating a copy that immediately brings the Mage right back after you feed it to Phyrexian Altar for mana. Because Phyrexian Altar converts the sacrificed creature into the exact red mana needed to recast the Mage, the cycle becomes completely self-sustaining. This yields an endless stream of sacrifice and leaves-the-battlefield triggers, alongside infinite colored mana to fuel whatever devastating finisher you choose.