Requires

Dockside Extortionist must be in hand. Dualcaster Mage must be in hand. Step Through must be in hand. Sneak Attack must be on the battlefield. Opponents control at least three artifacts and/or enchantments. There is at least one other creature on the battlefield. Mana needed:

Steps

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

Results