Dualcaster Mage + Graceful Reprieve + Yahenni, Undying Partisan

Dualcaster Mage

Graceful Reprieve

Yahenni, Undying Partisan

How it works

1. Cast Graceful Reprieve by paying its mana cost.
2. Holding priority, cast Dualcaster Mage by paying its mana cost.
3. When Dualcaster Mage enters, it triggers, copying Graceful Reprieve, with the copy targeting Dualcaster Mage.
4. Resolve the copy of Graceful Reprieve.
5. Holding priority, activate Yahenni by sacrificing Dualcaster Mage.
6. When Dualcaster Mage dies, Graceful Reprieve triggers, returning Dualcaster Mage from your graveyard to the battlefield.
7. Repeat from step 3.
8. Resolve all Yahenni abilities from step 5.

This cunning little loop sets up an endless cycle of resurrection by exploiting Dualcaster Mage's entry trigger to perpetually copy Graceful Reprieve, targeting the Mage itself each time. With Yahenni, Undying Partisan standing by as a willing executioner, you can sacrifice the Mage before the original spell even resolves to fuel Yahenni's sacrifice triggers and put its death-triggered return into motion. Because Graceful Reprieve brings Dualcaster Mage right back to the battlefield, the Mage triggers all over again to keep the spell copying indefinitely, letting you recur your spells and grind down the opponent's resolve with infinite triggers.