Clock of Omens, Lithoform Engine, and Dockside Extortionist

Prerequisites

• Clock of Omens on the battlefield
• Lithoform Engine on the battlefield
• Dockside Extortionist in hand
• Opponents control at least four artifacts and/or enchantments
• available

Steps

1. Cast Dockside Extortionist by paying
2. When Dockside Extortionist enters the battlefield, it triggers
3. Holding priority, activate Lithoform Engine's first ability by paying and tapping it, copying Dockside Extortionist's trigger
4. Resolve the copy of Dockside Extortionist's trigger, creating at least four Treasure artifact tokens
5. Activate two Treasures by tapping and sacrificing it, adding
6. Activate Clock of Omens by tapping two Treasures, untapping Lithoform Engine
7. Repeat from step 3
8. If opponents control five or more artifacts and/or enchantments, this combo nets infinite Treasure tokens

Results

• Infinite colored mana
• Infinite mana artifacts you control can produce
• Infinite Treasure tokens
• Infinite untap of artifacts you control