Midnight Guard, Banishing Knack, and Dockside Extortionist

Prerequisites

• Midnight Guard on the battlefield
• Banishing Knack in hand
• Dockside Extortionist in hand
• Midnight Guard does not have summoning sickness
• Opponents control at least three artifacts and/or enchantments
• available

Steps

1. Cast Dockside Extortionist by paying
2. Dockside Extortionist enters the battlefield, triggering itself and Midnight Guard
3. Resolve the Dockside Extortionist trigger, creating at least 3 Treasure tokens
4. Resolve the Midnight Guard trigger, untapping it
5. Activate a Treasure token by tapping and sacrificing it, adding
6. Cast Banishing Knack by paying targeting Midnight Guard
7. Activate Midnight Guard by tapping it, returning Dockside Extortionist from the battlefield to your hand
8. Activate two Treasure tokens by tapping and sacrificing them, adding
9. Cast Dockside Extortionist by paying
10. Dockside Extortionist enters the battlefield, triggering itself and Midnight Guard
11. Resolve the Dockside Extortionist trigger, creating at least 3 Treasure tokens
12. Resolve the Midnight Guard trigger, untapping it
13. Repeat from step 7

Results

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