Dualcaster Mage + Bloodflow Connoisseur + Second Sunrise

Dualcaster Mage

Bloodflow Connoisseur

Second Sunrise

How it works

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

This ingenious loop turns a modest graveyard-recursion spell into a perpetual engine by using Dualcaster Mage to continuously copy Second Sunrise. The Mage itself provides the targeting fodder while Bloodflow Connoisseur acts as the sacrificial outlet, neatly sending the wizard back to the graveyard just in time to be resurrected by the spell it just copied. Because Second Sunrise brings back everything that hit the graveyard that turn, it conveniently returns both Dualcaster Mage and any sacrificed creatures to the battlefield ready to repeat the process.