Dualcaster Mage + Grimgrin, Corpse-Born + Unearth

Dualcaster Mage

Grimgrin, Corpse-Born

Unearth

How it works

1. Cast Unearth by paying its mana cost, targeting any applicable target.
2. Holding priority, cast Dualcaster Mage by paying its mana cost.
3. When Dualcaster Mage enters, it triggers, targeting Unearth.
4. Holding priority, activate Grimgrin 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 turns graveyard recursion into an endlessly repeating cycle of sacrifice and rebirth. By casting Unearth to start the chain, you set the stage for Dualcaster Mage to enter the battlefield and copy the spell, targeting itself in your graveyard. Before that copy resolves, Grimgrin, Corpse-Born steps in to devour the Mage as a cost to untap itself and grow with a +1/+1 counter. As the copied Unearth brings Dualcaster Mage right back to life, the process can immediately begin anew, letting Grimgrin gorge on endless sacrifices while generating an infinite storm of creature triggers.