Dualcaster Mage + Justiciar's Portal

Dualcaster Mage

Justiciar's Portal

How it works

1. Cast Justiciar's Portal by paying its mana cost.
2. Holding priority, cast Dualcaster Mage by paying its mana cost.
3. When Dualcaster Mage enters, it triggers, copying Justiciar's Portal, with the copy targeting Dualcaster Mage.
4. Resolve the copy of Justiciar's Portal, blinking Dualcaster Mage.
5. Repeat from step 3.