Baral's Expertise, Dockside Extortionist, Lithoform Engine, and Vedalken Orrery

Prerequisites

• Baral's Expertise in hand
• Dockside Extortionist on the battlefield
• Lithoform Engine on the battlefield
• Vedalken Orrery on the battlefield
• Opponents control at least six artifacts and/or enchantments
• available

Steps

1. Cast Baral's Expertise by paying
2. Holding priority, activate Lithoform Engine's second ability by paying and tapping it, copying Baral's Expertise
3. Resolve the copy of Baral's Expertise, returning Dockside Extortionist and Lithoform Engine from the battlefield to your hand, and casting Lithoform Engine from your hand without paying its mana cost
4. Cast Dockside Extortionist by paying
5. Dockside Extortionist enters the battlefield, creating at least six Treasure tokens
6. Activate three Treasure tokens by tapping and sacrificing those, adding three mana of any color
7. Repeat from step 2

Results

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