Dualcaster Mage + Grimgrin, Corpse-Born + Leonardo's Technique

Dualcaster Mage

Grimgrin, Corpse-Born

Leonardo's Technique

How it works

1. Cast Leonardo's Technique 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 Leonardo's Technique.
4. Holding priority, activate Grimgrin by sacrificing Dualcaster Mage.
5. Resolve the Dualcaster Mage trigger, copying Leonardo's Technique, with the copy targeting Dualcaster Mage
6. Resolve the Leonardo's Technique copy, returning Dualcaster Mage from your graveyard to the battlefield.
7. Repeat from step 3.

This clever loop hinges on a recursive resurrection engine powered by Leonardo's Technique to pull Dualcaster Mage straight from the graveyard whenever it hits the bin. As Dualcaster Mage enters the battlefield, its triggered ability targets the original instant or sorcery spell on the stack, allowing you to copy it and continually loop the effect. Meanwhile, Grimgrin, Corpse-Born plays the vital role of the executioner, providing a reliable sacrifice outlet that instantly bins your mage while growing exponentially larger with infinite +1/+1 counters.