Dockside Extortionist + Dualcaster Mage + Step Through + Emergence Zone

Dockside Extortionist

Dualcaster Mage

Step Through

Emergence Zone

How it works

1. Activate Emergence Zone's second ability by paying 1, allowing you to cast spells this turn as though they have flash.
2. Cast Dockside Extortionist by paying 1.
3. When Dockside Extortionist enters the battlefield, it triggers, creating at least six Treasure tokens.
4. Activate five Treasure tokens by tapping and sacrificing them, adding 2.
5. Cast Step Through by paying 3, targeting any two creatures.
6. Holding priority, cast Dualcaster Mage by paying 1.
7. When Dualcaster Mage enters the battlefield, it triggers, copying Step Through, targeting Dockside Extortionist and Dualcaster Mage.
8. Resolve the copy of Step Through, returning Dockside Extortionist and Dualcaster Mage from the battlefield to your hand.
9. Repeat steps 2-4 one additional time.
10. Repeat from step 6.