Dockside Extortionist, Dualcaster Mage, Step Through, and Sneak Attack

Prerequisites

• Dockside Extortionist in hand
• Dualcaster Mage in hand
• Step Through in hand
• Sneak Attack on the battlefield
• Opponents control at least three artifacts and/or enchantments
• There is at least one other creature on the battlefield
• available

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

• Infinite colored mana
• Infinite ETB
• Infinite LTB
• Infinite magecraft triggers
• Infinite storm count
• Infinite Treasure tokens