Dualcaster Mage + Heartless Summoning + Airbender's Reversal

Dualcaster Mage

Heartless Summoning

Airbender's Reversal

How it works

1. Cast Airbender's Reversal by paying its mana cost, targeting any applicable target(s).
2. Holding priority, cast Dualcaster Mage by paying its mana cost reduced by Heartless Summoning.
3. When Dualcaster Mage enters, it triggers, copying Airbender's Reversal targeting Dualcaster Mage.
4. Resolve Airbender's Reversal, airbending Dualcaster Mage.
5. Holding priority, cast Dualcaster Mage from exile by paying 0 due to Heartless Summoning.
6. Repeat from step 3.