Dualcaster Mage + Extract from Darkness + Bloodflow Connoisseur

Dualcaster Mage

Extract from Darkness

Bloodflow Connoisseur

How it works

1. Cast Extract from Darkness by paying its mana cost
2. Holding priority, cast Dualcaster Mage by paying its mana cost.
3. When Dualcaster Mage enters, it triggers, targeting Extract from Darkness.
4. Holding priority, activate Bloodflow Connoisseur by sacrificing Dualcaster Mage.
5. Resolve the Dualcaster Mage trigger, copying Extract from Darkness
6. Resolve the Extract from Darkness copy, causing each player to mill two cards and returning Dualcaster Mage from your graveyard to the battlefield.
7. Repeat from step 3.

This elegant loop starts by casting Extract from Darkness to prime the graveyard, setting up the recursive engine that follows. When you drop Dualcaster Mage with flash, its entry trigger copies the original sorcery, while Bloodflow Connoisseur waits on the battlefield to instantly sacrifice the Mage and send it back to the graveyard. Because the resolving copy of Extract from Darkness resurrects Dualcaster Mage directly to your side of the battlefield, the whole sequence feeds into itself for infinite sacrifices, death triggers, and mill.