Moment of Reckoning + Dualcaster Mage + Carrion Feeder

Moment of Reckoning

Dualcaster Mage

Carrion Feeder

How it works

1. Cast Moment of Reckoning by paying its mana cost
2. Holding priority, cast Dualcaster Mage by paying its mana cost.
3. When Dualcaster Mage enters, it triggers, targeting Moment of Reckoning.
4. Holding priority, activate Carrion Feeder by sacrificing Dualcaster Mage.
5. Resolve the Dualcaster Mage trigger, copying Moment of Reckoning
6. Resolve the Moment of Reckoning copy, returning Dualcaster Mage from your graveyard to the battlefield.
7. Repeat from step 3.

This clever loop relies on carefully recycling Dualcaster Mage with a single cast of Moment of Reckoning to dismantle the entire board. When Dualcaster Mage enters the battlefield, its triggered ability targets the original Moment of Reckoning, allowing you to copy it. By using Carrion Feeder to sacrifice Dualcaster Mage in response, you clear the way to resolve the copied Moment of Reckoning, whose modes let you destroy any nonland permanent and immediately return Dualcaster Mage from your graveyard back to the battlefield. Because the newly returned wizard triggers again to copy the spell—while Carrion Feeder happily stockpiles infinite +1/+1 counters from the repeated sacrifices—you can repeat this cycle indefinitely to wipe out all opposing threats and generate unbounded value.