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

Infinite colored mana

Infinite ETB

Infinite LTB

Infinite magecraft triggers

Infinite storm count

Infinite Treasure tokens

Dockside Extortionist

Dualcaster Mage

Step Through

Emergence Zone

Cast Dockside Extortionist by paying {1}{R}.
When Dockside Extortionist enters the battlefield, it triggers, creating at least six Treasure tokens.
Activate five Treasure tokens by tapping and sacrificing them, adding {2}{R}{R}{R}.
Cast Step Through by paying {3}{U}{U}, targeting any two creatures.
Holding priority, cast Dualcaster Mage by paying {1}{R}{R}.
When Dualcaster Mage enters the battlefield, it triggers, copying Step Through, targeting Dockside Extortionist and Dualcaster Mage.
Resolve the copy of Step Through, returning Dockside Extortionist and Dualcaster Mage from the battlefield to your hand.
Repeat steps 1-3 one additional time.
Repeat from step 5.

Leyline of Anticipation

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

Naru Meha, Master Wizard

Activate Sneak Attack by paying {R}, putting Dockside Extortionist onto the battlefield from your hand.
When Dockside Extortionist enters the battlefield, it triggers, creating at least three Treasure tokens.
Activate two Treasure tokens by tapping and sacrificing them, adding {R}{R}.
Cast Step Through by paying {3}{U}{U}, targeting any two creatures.
Holding priority, activate Sneak Attack by paying {R}, putting Dualcaster Mage onto the battlefield from your han .
When Dualcaster Mage enters the battlefield, it triggers, copying Step Through, targeting Dockside Extortionist and Dualcaster Mage.
Resolve the copy of Step Through, returning Dockside Extortionist and Dualcaster Mage from the battlefield to your hand.
Repeat steps 1-3 one additional time.
Repeat from step 5.

Sneak Attack

Tidal Barracuda

Activate Sneak Attack by paying {R}, putting Dockside Extortionist onto the battlefield from your hand.
When Dockside Extortionist enters the battlefield, it triggers, creating at least three Treasure tokens.
Activate two Treasure tokens by tapping and sacrificing them, adding {R}{R}.
Cast Step Through by paying {3}{U}{U}, targeting any two creatures.
Holding priority, activate Sneak Attack by paying {R}, putting Naru Meha onto the battlefield from your han .
When Naru Meha enters the battlefield, it triggers, copying Step Through, targeting Dockside Extortionist and Naru Meha.
Resolve the copy of Step Through, returning Dockside Extortionist and Naru Meha from the battlefield to your hand.
Repeat steps 1-3 one additional time.
Repeat from step 5.

Cast Dockside Extortionist by paying {1}{R}.
When Dockside Extortionist enters the battlefield, it triggers, creating at least seven Treasure tokens.
Activate six Treasure tokens by tapping and sacrificing them, adding {3}{U}{U}{R}.
Cast Step Through by paying {3}{U}{U}, targeting any two creatures.
Holding priority, cast Naru Meha by paying {2}{U}{U}.
When Naru Meha enters the battlefield, it triggers, copying Step Through, targeting Dockside Extortionist and Naru Meha.
Resolve the copy of Step Through, returning Dockside Extortionist and Naru Meha from the battlefield to your hand.
Repeat steps 1-3 one additional time.
Repeat from step 5.

Combos with "Step Through"