Displacer Kitten, and Dockside Extortionist

Prerequisites

• Displacer Kitten on the battlefield
• Dockside Extortionist on the battlefield
• You have enough mana to cast the buyback spell with buyback
• Opponents control a number of artifacts and/or enchantments equal to or greater than one plus the number of Treasure tokens that would be required to cast the buyback spell with buyback
• There are legal targets for the buyback spell, if applicable

Steps

1. Cast the buyback spell with buyback by paying its mana cost plus its buyback cost
2. Displacer Kitten triggers, blinking Dockside Extortionist
3. When Dockside Extortionist enters the battlefield, it triggers, creating a number of Treasure artifact tokens equal to the number of artifacts and/or enchantments opponents control
4. Resolve the buyback spell, performing its listed effect and returning it to your hand
5. Activate a Treasure by tapping and sacrificing it, adding one mana of any color
6. Repeat step 5 until you have enough mana to cast the buyback spell with buyback
7. Repeat from step 1

Results

• Infinite blinking of nonland permanents you control
• Infinite colored mana
• Infinite ETB
• Infinite LTB
• Infinite magecraft triggers
• Infinite storm count
• Infinite Treasure tokens